/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 13:18:35,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 13:18:35,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 13:18:35,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 13:18:35,903 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 [2021-08-06 13:18:35,938 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 13:18:35,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 13:18:35,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-06 13:18:35,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-06 13:18:35,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 13:18:35,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 13:18:35,942 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 13:18:35,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 13:18:35,943 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 13:18:35,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 13:18:35,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 13:18:35,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 13:18:35,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 13:18:35,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 13:18:35,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 13:18:35,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 13:18:35,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 13:18:35,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 13:18:35,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 13:18:35,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 13:18:35,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 13:18:35,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 13:18:35,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 13:18:35,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:18:35,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 13:18:35,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 13:18:35,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 13:18:35,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 13:18:35,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 13:18:35,946 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 13:18:35,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 13:18:35,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 13:18:36,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 13:18:36,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 13:18:36,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 13:18:36,255 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 13:18:36,256 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 13:18:36,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-1.i [2021-08-06 13:18:36,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f156a7be3/6790f1f8f9a44b1899370628837ba00e/FLAG0907fb27f [2021-08-06 13:18:36,849 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 13:18:36,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i [2021-08-06 13:18:36,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f156a7be3/6790f1f8f9a44b1899370628837ba00e/FLAG0907fb27f [2021-08-06 13:18:37,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f156a7be3/6790f1f8f9a44b1899370628837ba00e [2021-08-06 13:18:37,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 13:18:37,325 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 13:18:37,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 13:18:37,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 13:18:37,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 13:18:37,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a6d2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37, skipping insertion in model container [2021-08-06 13:18:37,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 13:18:37,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 13:18:37,700 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i[41530,41543] [2021-08-06 13:18:37,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:18:37,728 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 13:18:37,752 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i[41530,41543] [2021-08-06 13:18:37,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:18:37,805 INFO L208 MainTranslator]: Completed translation [2021-08-06 13:18:37,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37 WrapperNode [2021-08-06 13:18:37,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 13:18:37,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 13:18:37,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 13:18:37,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 13:18:37,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 13:18:37,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 13:18:37,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 13:18:37,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 13:18:37,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 13:18:37,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 13:18:37,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 13:18:37,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 13:18:37,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (1/1) ... [2021-08-06 13:18:37,884 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:18:37,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:37,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 13:18:37,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 13:18:37,971 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-08-06 13:18:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-08-06 13:18:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-08-06 13:18:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-08-06 13:18:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 13:18:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 13:18:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-06 13:18:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 13:18:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-06 13:18:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 13:18:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 13:18:37,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 13:18:37,975 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 13:18:38,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 13:18:38,584 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-08-06 13:18:38,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:18:38 BoogieIcfgContainer [2021-08-06 13:18:38,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 13:18:38,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 13:18:38,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 13:18:38,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 13:18:38,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 01:18:37" (1/3) ... [2021-08-06 13:18:38,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e3564d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:18:38, skipping insertion in model container [2021-08-06 13:18:38,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:18:37" (2/3) ... [2021-08-06 13:18:38,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e3564d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:18:38, skipping insertion in model container [2021-08-06 13:18:38,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:18:38" (3/3) ... [2021-08-06 13:18:38,609 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2021-08-06 13:18:38,613 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 13:18:38,614 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 13:18:38,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-06 13:18:38,614 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 13:18:38,641 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,642 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,642 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,642 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,642 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,643 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,643 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,643 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,643 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,643 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,643 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,643 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,643 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,644 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,644 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,644 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,644 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,644 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,644 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,644 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,645 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,646 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,646 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,646 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,646 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,646 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,646 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,646 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,647 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,647 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,647 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,647 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,647 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,647 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,647 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,647 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,647 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,648 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,648 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,648 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,648 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,648 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,648 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,648 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,649 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,649 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,650 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,650 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,650 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,650 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,650 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,650 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,650 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,650 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,650 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,650 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,651 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,651 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,651 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,651 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,651 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,651 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,651 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,651 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,652 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,652 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,652 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,653 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,654 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,654 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,654 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,654 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,654 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,654 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,654 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,655 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,655 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,655 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,655 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,655 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,655 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,655 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,656 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,656 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,656 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,656 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,656 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,656 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,656 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,656 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,657 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,657 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,657 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,657 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,657 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,657 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,657 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,657 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,658 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,658 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,658 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,658 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,658 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,658 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,658 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,658 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,659 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,659 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,659 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,659 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,659 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,659 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,659 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,659 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,660 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,660 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,660 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,661 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,661 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,661 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,661 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,661 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,661 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,661 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,661 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,661 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,662 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,662 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,662 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,662 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,662 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,662 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,662 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,662 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,662 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,663 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,663 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,663 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,663 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,663 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,663 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,663 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,664 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,664 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,664 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,664 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,664 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,664 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,664 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,664 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,665 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,666 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,666 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,666 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,666 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,666 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,666 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,666 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,666 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,666 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,666 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,667 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,667 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,667 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,667 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,667 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,667 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,667 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,667 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,667 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,671 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,672 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,673 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,674 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,674 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,674 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,674 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,675 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,675 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,675 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,675 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,675 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,675 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,675 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,675 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,678 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,678 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,679 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,679 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,680 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,680 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,680 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,681 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,681 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,683 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,684 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,684 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,684 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,684 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,684 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,684 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,684 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,685 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,685 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,685 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,685 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,685 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,685 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,685 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,685 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,686 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,686 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,686 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,686 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,686 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,686 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,686 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:18:38,692 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-06 13:18:38,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1Thread1of1ForFork1 ======== [2021-08-06 13:18:38,731 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 13:18:38,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-06 13:18:38,742 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 152 places, 157 transitions, 336 flow [2021-08-06 13:18:38,988 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9090 states, 9088 states have (on average 2.8570642605633805) internal successors, (25965), 9089 states have internal predecessors, (25965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:39,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 9090 states, 9088 states have (on average 2.8570642605633805) internal successors, (25965), 9089 states have internal predecessors, (25965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-06 13:18:39,040 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:39,040 INFO L512 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, 1, 1] [2021-08-06 13:18:39,041 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:39,046 INFO L82 PathProgramCache]: Analyzing trace with hash 198346269, now seen corresponding path program 1 times [2021-08-06 13:18:39,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:39,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746869795] [2021-08-06 13:18:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:39,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:39,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:39,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746869795] [2021-08-06 13:18:39,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746869795] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:18:39,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:18:39,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 13:18:39,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029301183] [2021-08-06 13:18:39,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 13:18:39,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 13:18:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 13:18:39,419 INFO L87 Difference]: Start difference. First operand has 9090 states, 9088 states have (on average 2.8570642605633805) internal successors, (25965), 9089 states have internal predecessors, (25965), 0 states have call successors, (0), 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 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:39,664 INFO L93 Difference]: Finished difference Result 13194 states and 36538 transitions. [2021-08-06 13:18:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 13:18:39,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-08-06 13:18:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:39,809 INFO L225 Difference]: With dead ends: 13194 [2021-08-06 13:18:39,810 INFO L226 Difference]: Without dead ends: 12844 [2021-08-06 13:18:39,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 13:18:39,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12844 states. [2021-08-06 13:18:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12844 to 11431. [2021-08-06 13:18:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11431 states, 11429 states have (on average 2.7715460670224865) internal successors, (31676), 11430 states have internal predecessors, (31676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 31676 transitions. [2021-08-06 13:18:40,353 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 31676 transitions. Word has length 54 [2021-08-06 13:18:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:40,355 INFO L470 AbstractCegarLoop]: Abstraction has 11431 states and 31676 transitions. [2021-08-06 13:18:40,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 31676 transitions. [2021-08-06 13:18:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-06 13:18:40,374 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:40,374 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:40,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 13:18:40,375 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:40,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1090071929, now seen corresponding path program 1 times [2021-08-06 13:18:40,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:40,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212694939] [2021-08-06 13:18:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:40,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:40,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:40,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212694939] [2021-08-06 13:18:40,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212694939] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:18:40,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:18:40,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 13:18:40,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517896189] [2021-08-06 13:18:40,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-06 13:18:40,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:40,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-06 13:18:40,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-06 13:18:40,521 INFO L87 Difference]: Start difference. First operand 11431 states and 31676 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:40,700 INFO L93 Difference]: Finished difference Result 15291 states and 42316 transitions. [2021-08-06 13:18:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-06 13:18:40,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-08-06 13:18:40,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:40,779 INFO L225 Difference]: With dead ends: 15291 [2021-08-06 13:18:40,779 INFO L226 Difference]: Without dead ends: 15291 [2021-08-06 13:18:40,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-06 13:18:40,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15291 states. [2021-08-06 13:18:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15291 to 12010. [2021-08-06 13:18:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12010 states, 12008 states have (on average 2.770819453697535) internal successors, (33272), 12009 states have internal predecessors, (33272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12010 states to 12010 states and 33272 transitions. [2021-08-06 13:18:41,228 INFO L78 Accepts]: Start accepts. Automaton has 12010 states and 33272 transitions. Word has length 63 [2021-08-06 13:18:41,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:41,229 INFO L470 AbstractCegarLoop]: Abstraction has 12010 states and 33272 transitions. [2021-08-06 13:18:41,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:41,229 INFO L276 IsEmpty]: Start isEmpty. Operand 12010 states and 33272 transitions. [2021-08-06 13:18:41,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-08-06 13:18:41,252 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:41,253 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:41,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 13:18:41,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:41,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:41,255 INFO L82 PathProgramCache]: Analyzing trace with hash -828696007, now seen corresponding path program 1 times [2021-08-06 13:18:41,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:41,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140782567] [2021-08-06 13:18:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:41,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:41,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:41,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140782567] [2021-08-06 13:18:41,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140782567] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:18:41,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:18:41,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 13:18:41,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479920028] [2021-08-06 13:18:41,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-06 13:18:41,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:41,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-06 13:18:41,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-06 13:18:41,402 INFO L87 Difference]: Start difference. First operand 12010 states and 33272 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:41,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:41,721 INFO L93 Difference]: Finished difference Result 19268 states and 53351 transitions. [2021-08-06 13:18:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 13:18:41,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-08-06 13:18:41,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:41,804 INFO L225 Difference]: With dead ends: 19268 [2021-08-06 13:18:41,804 INFO L226 Difference]: Without dead ends: 19268 [2021-08-06 13:18:41,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-06 13:18:41,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19268 states. [2021-08-06 13:18:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19268 to 12548. [2021-08-06 13:18:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12548 states, 12546 states have (on average 2.768372389606249) internal successors, (34732), 12547 states have internal predecessors, (34732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12548 states to 12548 states and 34732 transitions. [2021-08-06 13:18:42,273 INFO L78 Accepts]: Start accepts. Automaton has 12548 states and 34732 transitions. Word has length 80 [2021-08-06 13:18:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:42,275 INFO L470 AbstractCegarLoop]: Abstraction has 12548 states and 34732 transitions. [2021-08-06 13:18:42,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 12548 states and 34732 transitions. [2021-08-06 13:18:42,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-08-06 13:18:42,299 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:42,299 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:42,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 13:18:42,300 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:42,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:42,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1993787743, now seen corresponding path program 1 times [2021-08-06 13:18:42,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:42,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24359068] [2021-08-06 13:18:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:42,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:42,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:42,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24359068] [2021-08-06 13:18:42,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24359068] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:42,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644642489] [2021-08-06 13:18:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:42,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:42,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:42,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:42,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-06 13:18:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:42,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-06 13:18:42,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:43,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644642489] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:43,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:43,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-06 13:18:43,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879683196] [2021-08-06 13:18:43,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 13:18:43,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:43,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 13:18:43,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-06 13:18:43,533 INFO L87 Difference]: Start difference. First operand 12548 states and 34732 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:43,688 INFO L93 Difference]: Finished difference Result 18881 states and 52105 transitions. [2021-08-06 13:18:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 13:18:43,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 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 89 [2021-08-06 13:18:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:43,757 INFO L225 Difference]: With dead ends: 18881 [2021-08-06 13:18:43,757 INFO L226 Difference]: Without dead ends: 18881 [2021-08-06 13:18:43,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-06 13:18:43,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18881 states. [2021-08-06 13:18:44,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18881 to 17185. [2021-08-06 13:18:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17185 states, 17183 states have (on average 2.7599371471803527) internal successors, (47424), 17184 states have internal predecessors, (47424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17185 states to 17185 states and 47424 transitions. [2021-08-06 13:18:44,371 INFO L78 Accepts]: Start accepts. Automaton has 17185 states and 47424 transitions. Word has length 89 [2021-08-06 13:18:44,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:44,371 INFO L470 AbstractCegarLoop]: Abstraction has 17185 states and 47424 transitions. [2021-08-06 13:18:44,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:44,371 INFO L276 IsEmpty]: Start isEmpty. Operand 17185 states and 47424 transitions. [2021-08-06 13:18:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-08-06 13:18:44,420 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:44,420 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:44,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-06 13:18:44,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:44,641 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:44,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:44,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1394361513, now seen corresponding path program 1 times [2021-08-06 13:18:44,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:44,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520502608] [2021-08-06 13:18:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:44,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-08-06 13:18:44,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:44,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520502608] [2021-08-06 13:18:44,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520502608] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:18:44,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:18:44,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 13:18:44,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076595807] [2021-08-06 13:18:44,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 13:18:44,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:44,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 13:18:44,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 13:18:44,710 INFO L87 Difference]: Start difference. First operand 17185 states and 47424 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:44,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:44,754 INFO L93 Difference]: Finished difference Result 6917 states and 17819 transitions. [2021-08-06 13:18:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 13:18:44,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 115 [2021-08-06 13:18:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:44,779 INFO L225 Difference]: With dead ends: 6917 [2021-08-06 13:18:44,779 INFO L226 Difference]: Without dead ends: 6725 [2021-08-06 13:18:44,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 13:18:44,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6725 states. [2021-08-06 13:18:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6725 to 6645. [2021-08-06 13:18:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6645 states, 6643 states have (on average 2.577600481710071) internal successors, (17123), 6644 states have internal predecessors, (17123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6645 states to 6645 states and 17123 transitions. [2021-08-06 13:18:44,980 INFO L78 Accepts]: Start accepts. Automaton has 6645 states and 17123 transitions. Word has length 115 [2021-08-06 13:18:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:44,981 INFO L470 AbstractCegarLoop]: Abstraction has 6645 states and 17123 transitions. [2021-08-06 13:18:44,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6645 states and 17123 transitions. [2021-08-06 13:18:44,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-08-06 13:18:44,994 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:44,994 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:44,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 13:18:44,995 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:44,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1855967523, now seen corresponding path program 2 times [2021-08-06 13:18:44,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:44,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496967616] [2021-08-06 13:18:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:44,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:45,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:45,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496967616] [2021-08-06 13:18:45,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496967616] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:45,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295068669] [2021-08-06 13:18:45,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:18:45,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:45,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:45,169 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:45,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-06 13:18:45,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:18:45,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:45,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-06 13:18:45,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:46,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295068669] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:46,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:46,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-08-06 13:18:46,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878717592] [2021-08-06 13:18:46,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 13:18:46,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:46,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 13:18:46,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-06 13:18:46,320 INFO L87 Difference]: Start difference. First operand 6645 states and 17123 transitions. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:46,446 INFO L93 Difference]: Finished difference Result 9517 states and 24500 transitions. [2021-08-06 13:18:46,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 13:18:46,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 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 124 [2021-08-06 13:18:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:46,473 INFO L225 Difference]: With dead ends: 9517 [2021-08-06 13:18:46,473 INFO L226 Difference]: Without dead ends: 9517 [2021-08-06 13:18:46,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 62.8ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:18:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9517 states. [2021-08-06 13:18:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9517 to 8880. [2021-08-06 13:18:46,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8880 states, 8878 states have (on average 2.576819103401667) internal successors, (22877), 8879 states have internal predecessors, (22877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 22877 transitions. [2021-08-06 13:18:46,711 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 22877 transitions. Word has length 124 [2021-08-06 13:18:46,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:46,711 INFO L470 AbstractCegarLoop]: Abstraction has 8880 states and 22877 transitions. [2021-08-06 13:18:46,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 22877 transitions. [2021-08-06 13:18:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-08-06 13:18:46,727 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:46,727 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:46,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:46,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-06 13:18:46,951 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:46,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1455263311, now seen corresponding path program 1 times [2021-08-06 13:18:46,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:46,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219965053] [2021-08-06 13:18:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:46,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:47,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:47,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219965053] [2021-08-06 13:18:47,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219965053] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:47,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909219439] [2021-08-06 13:18:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:47,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:47,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:47,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:47,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-06 13:18:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:47,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-06 13:18:47,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:18:48,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909219439] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:48,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:48,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-08-06 13:18:48,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807193670] [2021-08-06 13:18:48,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 13:18:48,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:48,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 13:18:48,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-06 13:18:48,089 INFO L87 Difference]: Start difference. First operand 8880 states and 22877 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:48,239 INFO L93 Difference]: Finished difference Result 12150 states and 31382 transitions. [2021-08-06 13:18:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 13:18:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 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 129 [2021-08-06 13:18:48,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:48,273 INFO L225 Difference]: With dead ends: 12150 [2021-08-06 13:18:48,274 INFO L226 Difference]: Without dead ends: 12150 [2021-08-06 13:18:48,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:18:48,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12150 states. [2021-08-06 13:18:48,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12150 to 10700. [2021-08-06 13:18:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10700 states, 10698 states have (on average 2.598429613011778) internal successors, (27798), 10699 states have internal predecessors, (27798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10700 states to 10700 states and 27798 transitions. [2021-08-06 13:18:48,497 INFO L78 Accepts]: Start accepts. Automaton has 10700 states and 27798 transitions. Word has length 129 [2021-08-06 13:18:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:48,497 INFO L470 AbstractCegarLoop]: Abstraction has 10700 states and 27798 transitions. [2021-08-06 13:18:48,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:48,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10700 states and 27798 transitions. [2021-08-06 13:18:48,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-08-06 13:18:48,521 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:48,521 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:48,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:48,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:48,737 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:48,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:48,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1970116449, now seen corresponding path program 3 times [2021-08-06 13:18:48,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:48,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512282806] [2021-08-06 13:18:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:48,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:48,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:48,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512282806] [2021-08-06 13:18:48,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512282806] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:48,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172176809] [2021-08-06 13:18:48,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:18:48,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:48,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:48,873 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:48,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-06 13:18:49,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-06 13:18:49,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:49,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-06 13:18:49,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:50,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172176809] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:50,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:50,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-08-06 13:18:50,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599731911] [2021-08-06 13:18:50,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 13:18:50,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:50,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 13:18:50,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:18:50,260 INFO L87 Difference]: Start difference. First operand 10700 states and 27798 transitions. Second operand has 11 states, 11 states have (on average 18.727272727272727) internal successors, (206), 11 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:50,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:50,426 INFO L93 Difference]: Finished difference Result 14707 states and 37949 transitions. [2021-08-06 13:18:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 13:18:50,428 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.727272727272727) internal successors, (206), 11 states have internal predecessors, (206), 0 states have call successors, (0), 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 159 [2021-08-06 13:18:50,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:50,471 INFO L225 Difference]: With dead ends: 14707 [2021-08-06 13:18:50,471 INFO L226 Difference]: Without dead ends: 14707 [2021-08-06 13:18:50,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:18:50,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14707 states. [2021-08-06 13:18:50,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14707 to 12935. [2021-08-06 13:18:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12935 states, 12933 states have (on average 2.5942936673625607) internal successors, (33552), 12934 states have internal predecessors, (33552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12935 states to 12935 states and 33552 transitions. [2021-08-06 13:18:50,800 INFO L78 Accepts]: Start accepts. Automaton has 12935 states and 33552 transitions. Word has length 159 [2021-08-06 13:18:50,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:50,801 INFO L470 AbstractCegarLoop]: Abstraction has 12935 states and 33552 transitions. [2021-08-06 13:18:50,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.727272727272727) internal successors, (206), 11 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:50,801 INFO L276 IsEmpty]: Start isEmpty. Operand 12935 states and 33552 transitions. [2021-08-06 13:18:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-08-06 13:18:50,821 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:50,822 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:50,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:51,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:51,022 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:51,023 INFO L82 PathProgramCache]: Analyzing trace with hash 569109827, now seen corresponding path program 2 times [2021-08-06 13:18:51,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:51,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710024964] [2021-08-06 13:18:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:51,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:18:51,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:51,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710024964] [2021-08-06 13:18:51,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710024964] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:51,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526060823] [2021-08-06 13:18:51,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:18:51,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:51,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:51,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:51,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-06 13:18:51,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:18:51,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:51,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-06 13:18:51,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:18:52,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526060823] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:52,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:52,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-08-06 13:18:52,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210649607] [2021-08-06 13:18:52,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 13:18:52,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:52,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 13:18:52,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-06 13:18:52,493 INFO L87 Difference]: Start difference. First operand 12935 states and 33552 transitions. Second operand has 10 states, 10 states have (on average 20.8) internal successors, (208), 10 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:52,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:52,645 INFO L93 Difference]: Finished difference Result 17340 states and 44831 transitions. [2021-08-06 13:18:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 13:18:52,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.8) internal successors, (208), 10 states have internal predecessors, (208), 0 states have call successors, (0), 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 164 [2021-08-06 13:18:52,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:52,684 INFO L225 Difference]: With dead ends: 17340 [2021-08-06 13:18:52,684 INFO L226 Difference]: Without dead ends: 17340 [2021-08-06 13:18:52,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 74.3ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-08-06 13:18:52,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17340 states. [2021-08-06 13:18:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17340 to 12935. [2021-08-06 13:18:52,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12935 states, 12933 states have (on average 2.5942936673625607) internal successors, (33552), 12934 states have internal predecessors, (33552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12935 states to 12935 states and 33552 transitions. [2021-08-06 13:18:52,989 INFO L78 Accepts]: Start accepts. Automaton has 12935 states and 33552 transitions. Word has length 164 [2021-08-06 13:18:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:52,989 INFO L470 AbstractCegarLoop]: Abstraction has 12935 states and 33552 transitions. [2021-08-06 13:18:52,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.8) internal successors, (208), 10 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:52,989 INFO L276 IsEmpty]: Start isEmpty. Operand 12935 states and 33552 transitions. [2021-08-06 13:18:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-08-06 13:18:53,008 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:53,008 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:53,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:53,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:53,225 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:53,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:53,225 INFO L82 PathProgramCache]: Analyzing trace with hash 529942429, now seen corresponding path program 4 times [2021-08-06 13:18:53,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:53,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450641608] [2021-08-06 13:18:53,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:53,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:53,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:53,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450641608] [2021-08-06 13:18:53,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450641608] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:53,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726870982] [2021-08-06 13:18:53,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:18:53,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:53,392 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:53,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-06 13:18:53,825 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:18:53,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:53,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-06 13:18:53,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:18:54,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726870982] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:54,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:54,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-08-06 13:18:54,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949240039] [2021-08-06 13:18:54,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 13:18:54,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:54,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 13:18:54,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:18:54,915 INFO L87 Difference]: Start difference. First operand 12935 states and 33552 transitions. Second operand has 13 states, 13 states have (on average 18.53846153846154) internal successors, (241), 13 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:55,143 INFO L93 Difference]: Finished difference Result 17022 states and 43907 transitions. [2021-08-06 13:18:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-06 13:18:55,144 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.53846153846154) internal successors, (241), 13 states have internal predecessors, (241), 0 states have call successors, (0), 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 194 [2021-08-06 13:18:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:55,170 INFO L225 Difference]: With dead ends: 17022 [2021-08-06 13:18:55,170 INFO L226 Difference]: Without dead ends: 17022 [2021-08-06 13:18:55,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 127.6ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-08-06 13:18:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17022 states. [2021-08-06 13:18:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17022 to 15170. [2021-08-06 13:18:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15170 states, 15168 states have (on average 2.591376582278481) internal successors, (39306), 15169 states have internal predecessors, (39306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 39306 transitions. [2021-08-06 13:18:55,451 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 39306 transitions. Word has length 194 [2021-08-06 13:18:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:55,451 INFO L470 AbstractCegarLoop]: Abstraction has 15170 states and 39306 transitions. [2021-08-06 13:18:55,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.53846153846154) internal successors, (241), 13 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 39306 transitions. [2021-08-06 13:18:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-08-06 13:18:55,471 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:55,472 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:55,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:55,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:55,696 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:55,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:55,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1540474481, now seen corresponding path program 3 times [2021-08-06 13:18:55,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:55,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061558405] [2021-08-06 13:18:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:55,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 138 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-06 13:18:55,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:55,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061558405] [2021-08-06 13:18:55,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061558405] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:55,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187942746] [2021-08-06 13:18:55,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:18:55,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:55,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:55,869 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:55,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-06 13:18:56,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-06 13:18:56,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:56,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-06 13:18:56,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:18:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 115 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:18:57,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187942746] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:57,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:18:57,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-08-06 13:18:57,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020233176] [2021-08-06 13:18:57,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 13:18:57,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:18:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 13:18:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-06 13:18:57,638 INFO L87 Difference]: Start difference. First operand 15170 states and 39306 transitions. Second operand has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:18:57,907 INFO L93 Difference]: Finished difference Result 20205 states and 52398 transitions. [2021-08-06 13:18:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-06 13:18:57,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 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 199 [2021-08-06 13:18:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:18:57,955 INFO L225 Difference]: With dead ends: 20205 [2021-08-06 13:18:57,955 INFO L226 Difference]: Without dead ends: 20205 [2021-08-06 13:18:57,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:18:57,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20205 states. [2021-08-06 13:18:58,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20205 to 16990. [2021-08-06 13:18:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16990 states, 16988 states have (on average 2.603425947727808) internal successors, (44227), 16989 states have internal predecessors, (44227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:58,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16990 states to 16990 states and 44227 transitions. [2021-08-06 13:18:58,267 INFO L78 Accepts]: Start accepts. Automaton has 16990 states and 44227 transitions. Word has length 199 [2021-08-06 13:18:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:18:58,268 INFO L470 AbstractCegarLoop]: Abstraction has 16990 states and 44227 transitions. [2021-08-06 13:18:58,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:18:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 16990 states and 44227 transitions. [2021-08-06 13:18:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-08-06 13:18:58,292 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:18:58,292 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:18:58,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-06 13:18:58,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:58,496 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:18:58,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:18:58,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1695381041, now seen corresponding path program 4 times [2021-08-06 13:18:58,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:18:58,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053524318] [2021-08-06 13:18:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:18:58,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:18:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:18:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:18:58,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:18:58,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053524318] [2021-08-06 13:18:58,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053524318] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:18:58,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878931011] [2021-08-06 13:18:58,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:18:58,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:18:58,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:18:58,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:18:58,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-06 13:18:59,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:18:59,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:18:59,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-06 13:18:59,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:19:00,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878931011] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:00,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:00,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-08-06 13:19:00,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990125471] [2021-08-06 13:19:00,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 13:19:00,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:00,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 13:19:00,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 13:19:00,321 INFO L87 Difference]: Start difference. First operand 16990 states and 44227 transitions. Second operand has 12 states, 12 states have (on average 20.25) internal successors, (243), 12 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:00,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:00,552 INFO L93 Difference]: Finished difference Result 21555 states and 55914 transitions. [2021-08-06 13:19:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-06 13:19:00,552 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.25) internal successors, (243), 12 states have internal predecessors, (243), 0 states have call successors, (0), 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 199 [2021-08-06 13:19:00,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:00,589 INFO L225 Difference]: With dead ends: 21555 [2021-08-06 13:19:00,589 INFO L226 Difference]: Without dead ends: 21555 [2021-08-06 13:19:00,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-08-06 13:19:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21555 states. [2021-08-06 13:19:00,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21555 to 16990. [2021-08-06 13:19:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16990 states, 16988 states have (on average 2.603425947727808) internal successors, (44227), 16989 states have internal predecessors, (44227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16990 states to 16990 states and 44227 transitions. [2021-08-06 13:19:00,870 INFO L78 Accepts]: Start accepts. Automaton has 16990 states and 44227 transitions. Word has length 199 [2021-08-06 13:19:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:00,870 INFO L470 AbstractCegarLoop]: Abstraction has 16990 states and 44227 transitions. [2021-08-06 13:19:00,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.25) internal successors, (243), 12 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 16990 states and 44227 transitions. [2021-08-06 13:19:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-08-06 13:19:00,900 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:00,901 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:00,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:01,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-06 13:19:01,114 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:01,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1028626399, now seen corresponding path program 5 times [2021-08-06 13:19:01,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:01,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640128908] [2021-08-06 13:19:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:01,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:01,280 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:19:01,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:01,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640128908] [2021-08-06 13:19:01,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640128908] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:01,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804711946] [2021-08-06 13:19:01,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:19:01,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:01,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:01,285 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:01,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-06 13:19:01,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-06 13:19:01,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:01,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 13:19:01,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:19:03,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804711946] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:03,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:03,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-08-06 13:19:03,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126214993] [2021-08-06 13:19:03,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:19:03,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:19:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:19:03,233 INFO L87 Difference]: Start difference. First operand 16990 states and 44227 transitions. Second operand has 15 states, 15 states have (on average 18.4) internal successors, (276), 15 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:03,498 INFO L93 Difference]: Finished difference Result 22762 states and 58965 transitions. [2021-08-06 13:19:03,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 13:19:03,498 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.4) internal successors, (276), 15 states have internal predecessors, (276), 0 states have call successors, (0), 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 229 [2021-08-06 13:19:03,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:03,535 INFO L225 Difference]: With dead ends: 22762 [2021-08-06 13:19:03,535 INFO L226 Difference]: Without dead ends: 22762 [2021-08-06 13:19:03,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 153.4ms TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-08-06 13:19:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22762 states. [2021-08-06 13:19:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22762 to 19225. [2021-08-06 13:19:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19225 states, 19223 states have (on average 2.6000624252197886) internal successors, (49981), 19224 states have internal predecessors, (49981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:03,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19225 states to 19225 states and 49981 transitions. [2021-08-06 13:19:03,837 INFO L78 Accepts]: Start accepts. Automaton has 19225 states and 49981 transitions. Word has length 229 [2021-08-06 13:19:03,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:03,838 INFO L470 AbstractCegarLoop]: Abstraction has 19225 states and 49981 transitions. [2021-08-06 13:19:03,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.4) internal successors, (276), 15 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:03,838 INFO L276 IsEmpty]: Start isEmpty. Operand 19225 states and 49981 transitions. [2021-08-06 13:19:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-08-06 13:19:03,861 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:03,861 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:03,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:04,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-06 13:19:04,062 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:04,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1104377042, now seen corresponding path program 1 times [2021-08-06 13:19:04,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:04,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149645927] [2021-08-06 13:19:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:04,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 9 proven. 155 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-06 13:19:04,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:04,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149645927] [2021-08-06 13:19:04,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149645927] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:04,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967933696] [2021-08-06 13:19:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:04,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:04,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:04,207 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:04,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-06 13:19:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:04,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 13:19:04,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 9 proven. 132 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-08-06 13:19:06,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967933696] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:06,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:06,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-08-06 13:19:06,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843273645] [2021-08-06 13:19:06,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 13:19:06,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:06,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 13:19:06,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:19:06,208 INFO L87 Difference]: Start difference. First operand 19225 states and 49981 transitions. Second operand has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:06,518 INFO L93 Difference]: Finished difference Result 31875 states and 82897 transitions. [2021-08-06 13:19:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-06 13:19:06,518 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 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 233 [2021-08-06 13:19:06,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:06,622 INFO L225 Difference]: With dead ends: 31875 [2021-08-06 13:19:06,622 INFO L226 Difference]: Without dead ends: 31875 [2021-08-06 13:19:06,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-08-06 13:19:06,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31875 states. [2021-08-06 13:19:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31875 to 20565. [2021-08-06 13:19:06,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20565 states, 20563 states have (on average 2.6065262850751347) internal successors, (53598), 20564 states have internal predecessors, (53598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:07,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20565 states to 20565 states and 53598 transitions. [2021-08-06 13:19:07,037 INFO L78 Accepts]: Start accepts. Automaton has 20565 states and 53598 transitions. Word has length 233 [2021-08-06 13:19:07,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:07,038 INFO L470 AbstractCegarLoop]: Abstraction has 20565 states and 53598 transitions. [2021-08-06 13:19:07,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:07,038 INFO L276 IsEmpty]: Start isEmpty. Operand 20565 states and 53598 transitions. [2021-08-06 13:19:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-08-06 13:19:07,069 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:07,069 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:07,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:07,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-06 13:19:07,270 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:07,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:07,270 INFO L82 PathProgramCache]: Analyzing trace with hash -517123923, now seen corresponding path program 5 times [2021-08-06 13:19:07,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:07,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28079525] [2021-08-06 13:19:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:07,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 258 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-06 13:19:07,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:07,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28079525] [2021-08-06 13:19:07,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28079525] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:07,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682118569] [2021-08-06 13:19:07,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:19:07,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:07,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:07,578 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:07,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-06 13:19:08,584 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-06 13:19:08,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:08,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 13:19:08,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:19:09,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682118569] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:09,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:09,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-08-06 13:19:09,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054174203] [2021-08-06 13:19:09,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 13:19:09,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:09,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 13:19:09,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 13:19:09,690 INFO L87 Difference]: Start difference. First operand 20565 states and 53598 transitions. Second operand has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:09,951 INFO L93 Difference]: Finished difference Result 27690 states and 72018 transitions. [2021-08-06 13:19:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:19:09,952 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 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 234 [2021-08-06 13:19:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:10,016 INFO L225 Difference]: With dead ends: 27690 [2021-08-06 13:19:10,016 INFO L226 Difference]: Without dead ends: 27690 [2021-08-06 13:19:10,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 170.0ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-08-06 13:19:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27690 states. [2021-08-06 13:19:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27690 to 23465. [2021-08-06 13:19:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23465 states, 23463 states have (on average 2.6199974427822528) internal successors, (61473), 23464 states have internal predecessors, (61473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23465 states to 23465 states and 61473 transitions. [2021-08-06 13:19:10,387 INFO L78 Accepts]: Start accepts. Automaton has 23465 states and 61473 transitions. Word has length 234 [2021-08-06 13:19:10,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:10,388 INFO L470 AbstractCegarLoop]: Abstraction has 23465 states and 61473 transitions. [2021-08-06 13:19:10,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 23465 states and 61473 transitions. [2021-08-06 13:19:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-08-06 13:19:10,418 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:10,418 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:10,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:10,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-06 13:19:10,619 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:10,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:10,619 INFO L82 PathProgramCache]: Analyzing trace with hash -162205309, now seen corresponding path program 6 times [2021-08-06 13:19:10,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:10,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121630204] [2021-08-06 13:19:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:10,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:19:10,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:10,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121630204] [2021-08-06 13:19:10,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121630204] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:10,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156442512] [2021-08-06 13:19:10,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:19:10,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:10,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:10,779 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:10,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-06 13:19:11,677 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-06 13:19:11,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:11,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 13:19:11,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:19:12,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156442512] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:12,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:12,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-08-06 13:19:12,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544212762] [2021-08-06 13:19:12,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 13:19:12,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:12,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 13:19:12,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 13:19:12,932 INFO L87 Difference]: Start difference. First operand 23465 states and 61473 transitions. Second operand has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:13,166 INFO L93 Difference]: Finished difference Result 35440 states and 92193 transitions. [2021-08-06 13:19:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-06 13:19:13,167 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 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 234 [2021-08-06 13:19:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:13,236 INFO L225 Difference]: With dead ends: 35440 [2021-08-06 13:19:13,236 INFO L226 Difference]: Without dead ends: 35440 [2021-08-06 13:19:13,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:19:13,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35440 states. [2021-08-06 13:19:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35440 to 25285. [2021-08-06 13:19:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25285 states, 25283 states have (on average 2.6260333030099274) internal successors, (66394), 25284 states have internal predecessors, (66394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25285 states to 25285 states and 66394 transitions. [2021-08-06 13:19:13,753 INFO L78 Accepts]: Start accepts. Automaton has 25285 states and 66394 transitions. Word has length 234 [2021-08-06 13:19:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:13,753 INFO L470 AbstractCegarLoop]: Abstraction has 25285 states and 66394 transitions. [2021-08-06 13:19:13,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:13,753 INFO L276 IsEmpty]: Start isEmpty. Operand 25285 states and 66394 transitions. [2021-08-06 13:19:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-08-06 13:19:13,785 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:13,785 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:13,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:13,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-06 13:19:13,986 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:13,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:13,986 INFO L82 PathProgramCache]: Analyzing trace with hash -317111869, now seen corresponding path program 7 times [2021-08-06 13:19:13,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:13,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746074181] [2021-08-06 13:19:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:13,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 256 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:19:14,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:14,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746074181] [2021-08-06 13:19:14,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746074181] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:14,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548726096] [2021-08-06 13:19:14,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:19:14,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:14,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:14,142 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:14,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-06 13:19:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:15,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-06 13:19:15,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 256 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:19:16,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548726096] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:16,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:16,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-08-06 13:19:16,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983658820] [2021-08-06 13:19:16,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 13:19:16,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:16,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 13:19:16,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:19:16,339 INFO L87 Difference]: Start difference. First operand 25285 states and 66394 transitions. Second operand has 14 states, 14 states have (on average 19.857142857142858) internal successors, (278), 14 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:16,606 INFO L93 Difference]: Finished difference Result 34570 states and 90170 transitions. [2021-08-06 13:19:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:19:16,606 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.857142857142858) internal successors, (278), 14 states have internal predecessors, (278), 0 states have call successors, (0), 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 234 [2021-08-06 13:19:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:16,673 INFO L225 Difference]: With dead ends: 34570 [2021-08-06 13:19:16,673 INFO L226 Difference]: Without dead ends: 34570 [2021-08-06 13:19:16,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-08-06 13:19:16,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34570 states. [2021-08-06 13:19:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34570 to 25285. [2021-08-06 13:19:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25285 states, 25283 states have (on average 2.6260333030099274) internal successors, (66394), 25284 states have internal predecessors, (66394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25285 states to 25285 states and 66394 transitions. [2021-08-06 13:19:17,144 INFO L78 Accepts]: Start accepts. Automaton has 25285 states and 66394 transitions. Word has length 234 [2021-08-06 13:19:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:17,144 INFO L470 AbstractCegarLoop]: Abstraction has 25285 states and 66394 transitions. [2021-08-06 13:19:17,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.857142857142858) internal successors, (278), 14 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:17,144 INFO L276 IsEmpty]: Start isEmpty. Operand 25285 states and 66394 transitions. [2021-08-06 13:19:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-08-06 13:19:17,182 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:17,183 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:17,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:17,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-06 13:19:17,383 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:17,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:17,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1994444893, now seen corresponding path program 6 times [2021-08-06 13:19:17,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:17,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752330029] [2021-08-06 13:19:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:17,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:19:17,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:17,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752330029] [2021-08-06 13:19:17,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752330029] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:17,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191890549] [2021-08-06 13:19:17,587 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:19:17,588 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:17,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:17,588 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:17,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-06 13:19:18,693 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-06 13:19:18,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:18,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 13:19:18,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:19:20,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191890549] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:20,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:20,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-08-06 13:19:20,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127344290] [2021-08-06 13:19:20,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:19:20,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:20,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:19:20,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:19:20,051 INFO L87 Difference]: Start difference. First operand 25285 states and 66394 transitions. Second operand has 17 states, 17 states have (on average 18.294117647058822) internal successors, (311), 17 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:20,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:20,385 INFO L93 Difference]: Finished difference Result 31662 states and 82561 transitions. [2021-08-06 13:19:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:19:20,389 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.294117647058822) internal successors, (311), 17 states have internal predecessors, (311), 0 states have call successors, (0), 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 264 [2021-08-06 13:19:20,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:20,471 INFO L225 Difference]: With dead ends: 31662 [2021-08-06 13:19:20,472 INFO L226 Difference]: Without dead ends: 31662 [2021-08-06 13:19:20,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 192.4ms TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:19:20,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31662 states. [2021-08-06 13:19:20,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31662 to 27520. [2021-08-06 13:19:20,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27520 states, 27518 states have (on average 2.621847517988226) internal successors, (72148), 27519 states have internal predecessors, (72148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27520 states to 27520 states and 72148 transitions. [2021-08-06 13:19:20,965 INFO L78 Accepts]: Start accepts. Automaton has 27520 states and 72148 transitions. Word has length 264 [2021-08-06 13:19:20,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:20,965 INFO L470 AbstractCegarLoop]: Abstraction has 27520 states and 72148 transitions. [2021-08-06 13:19:20,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.294117647058822) internal successors, (311), 17 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:20,965 INFO L276 IsEmpty]: Start isEmpty. Operand 27520 states and 72148 transitions. [2021-08-06 13:19:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-08-06 13:19:21,008 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:21,009 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:21,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:21,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:21,209 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:21,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1873115856, now seen corresponding path program 2 times [2021-08-06 13:19:21,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:21,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451133193] [2021-08-06 13:19:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:21,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 12 proven. 275 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-06 13:19:21,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:21,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451133193] [2021-08-06 13:19:21,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451133193] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:21,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546495860] [2021-08-06 13:19:21,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:19:21,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:21,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:21,376 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:21,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-06 13:19:22,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:19:22,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:22,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 13:19:22,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 12 proven. 252 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-08-06 13:19:23,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546495860] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:23,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:23,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-08-06 13:19:23,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961036164] [2021-08-06 13:19:23,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 13:19:23,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:23,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 13:19:23,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:19:23,843 INFO L87 Difference]: Start difference. First operand 27520 states and 72148 transitions. Second operand has 13 states, 13 states have (on average 21.307692307692307) internal successors, (277), 13 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:24,136 INFO L93 Difference]: Finished difference Result 41645 states and 109000 transitions. [2021-08-06 13:19:24,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:19:24,137 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.307692307692307) internal successors, (277), 13 states have internal predecessors, (277), 0 states have call successors, (0), 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 268 [2021-08-06 13:19:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:24,216 INFO L225 Difference]: With dead ends: 41645 [2021-08-06 13:19:24,216 INFO L226 Difference]: Without dead ends: 41645 [2021-08-06 13:19:24,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 140.6ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-08-06 13:19:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41645 states. [2021-08-06 13:19:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41645 to 27520. [2021-08-06 13:19:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27520 states, 27518 states have (on average 2.621847517988226) internal successors, (72148), 27519 states have internal predecessors, (72148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27520 states to 27520 states and 72148 transitions. [2021-08-06 13:19:24,749 INFO L78 Accepts]: Start accepts. Automaton has 27520 states and 72148 transitions. Word has length 268 [2021-08-06 13:19:24,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:24,749 INFO L470 AbstractCegarLoop]: Abstraction has 27520 states and 72148 transitions. [2021-08-06 13:19:24,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.307692307692307) internal successors, (277), 13 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 27520 states and 72148 transitions. [2021-08-06 13:19:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-08-06 13:19:24,791 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:24,791 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:24,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:24,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:24,992 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:24,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:24,992 INFO L82 PathProgramCache]: Analyzing trace with hash -25410014, now seen corresponding path program 3 times [2021-08-06 13:19:24,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:24,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905233845] [2021-08-06 13:19:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:24,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 12 proven. 252 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-08-06 13:19:25,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:25,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905233845] [2021-08-06 13:19:25,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905233845] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:25,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147532880] [2021-08-06 13:19:25,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:19:25,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:25,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:25,177 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:25,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-06 13:19:26,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-06 13:19:26,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:26,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-06 13:19:26,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-08-06 13:19:27,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147532880] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:19:27,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-06 13:19:27,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-08-06 13:19:27,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577058222] [2021-08-06 13:19:27,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:19:27,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:27,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:19:27,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:19:27,715 INFO L87 Difference]: Start difference. First operand 27520 states and 72148 transitions. Second operand has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:27,924 INFO L93 Difference]: Finished difference Result 36820 states and 96265 transitions. [2021-08-06 13:19:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 13:19:27,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 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 268 [2021-08-06 13:19:27,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:27,997 INFO L225 Difference]: With dead ends: 36820 [2021-08-06 13:19:27,997 INFO L226 Difference]: Without dead ends: 36820 [2021-08-06 13:19:27,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 133.4ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-08-06 13:19:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36820 states. [2021-08-06 13:19:28,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36820 to 28740. [2021-08-06 13:19:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28740 states, 28738 states have (on average 2.624364952327928) internal successors, (75419), 28739 states have internal predecessors, (75419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28740 states to 28740 states and 75419 transitions. [2021-08-06 13:19:28,535 INFO L78 Accepts]: Start accepts. Automaton has 28740 states and 75419 transitions. Word has length 268 [2021-08-06 13:19:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:28,535 INFO L470 AbstractCegarLoop]: Abstraction has 28740 states and 75419 transitions. [2021-08-06 13:19:28,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 28740 states and 75419 transitions. [2021-08-06 13:19:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-08-06 13:19:28,578 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:28,578 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:28,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:28,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:28,779 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1723370289, now seen corresponding path program 8 times [2021-08-06 13:19:28,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:28,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374433478] [2021-08-06 13:19:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:28,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 413 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-06 13:19:28,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:28,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374433478] [2021-08-06 13:19:28,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374433478] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:28,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551798470] [2021-08-06 13:19:28,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:19:28,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:28,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:28,966 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:29,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-06 13:19:30,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:19:30,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:30,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 13:19:30,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 390 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:19:31,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551798470] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:31,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:31,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-08-06 13:19:31,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547984766] [2021-08-06 13:19:31,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 13:19:31,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:31,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 13:19:31,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:19:31,651 INFO L87 Difference]: Start difference. First operand 28740 states and 75419 transitions. Second operand has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 14 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:31,952 INFO L93 Difference]: Finished difference Result 34730 states and 90551 transitions. [2021-08-06 13:19:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:19:31,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 14 states have internal predecessors, (291), 0 states have call successors, (0), 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 269 [2021-08-06 13:19:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:32,018 INFO L225 Difference]: With dead ends: 34730 [2021-08-06 13:19:32,019 INFO L226 Difference]: Without dead ends: 34730 [2021-08-06 13:19:32,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 146.8ms TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-08-06 13:19:32,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34730 states. [2021-08-06 13:19:32,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34730 to 29820. [2021-08-06 13:19:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29820 states, 29818 states have (on average 2.6283788315782415) internal successors, (78373), 29819 states have internal predecessors, (78373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:32,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29820 states to 29820 states and 78373 transitions. [2021-08-06 13:19:32,641 INFO L78 Accepts]: Start accepts. Automaton has 29820 states and 78373 transitions. Word has length 269 [2021-08-06 13:19:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:32,641 INFO L470 AbstractCegarLoop]: Abstraction has 29820 states and 78373 transitions. [2021-08-06 13:19:32,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 14 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:32,641 INFO L276 IsEmpty]: Start isEmpty. Operand 29820 states and 78373 transitions. [2021-08-06 13:19:32,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-08-06 13:19:32,682 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:32,683 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:32,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:32,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:32,884 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:32,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:32,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1428884423, now seen corresponding path program 9 times [2021-08-06 13:19:32,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:32,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471912162] [2021-08-06 13:19:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:32,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 390 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:19:33,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:33,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471912162] [2021-08-06 13:19:33,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471912162] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:33,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991081170] [2021-08-06 13:19:33,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:19:33,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:33,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:33,042 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:33,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-06 13:19:34,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-06 13:19:34,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:34,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 13:19:34,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 390 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:19:35,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991081170] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:35,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:35,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-08-06 13:19:35,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58932056] [2021-08-06 13:19:35,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 13:19:35,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 13:19:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:19:35,828 INFO L87 Difference]: Start difference. First operand 29820 states and 78373 transitions. Second operand has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 14 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:36,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:36,283 INFO L93 Difference]: Finished difference Result 40685 states and 106189 transitions. [2021-08-06 13:19:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:19:36,284 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 14 states have internal predecessors, (291), 0 states have call successors, (0), 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 269 [2021-08-06 13:19:36,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:36,357 INFO L225 Difference]: With dead ends: 40685 [2021-08-06 13:19:36,357 INFO L226 Difference]: Without dead ends: 40685 [2021-08-06 13:19:36,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-08-06 13:19:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40685 states. [2021-08-06 13:19:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40685 to 32720. [2021-08-06 13:19:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32720 states, 32718 states have (on average 2.6361024512500766) internal successors, (86248), 32719 states have internal predecessors, (86248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32720 states to 32720 states and 86248 transitions. [2021-08-06 13:19:36,944 INFO L78 Accepts]: Start accepts. Automaton has 32720 states and 86248 transitions. Word has length 269 [2021-08-06 13:19:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:36,945 INFO L470 AbstractCegarLoop]: Abstraction has 32720 states and 86248 transitions. [2021-08-06 13:19:36,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 14 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 32720 states and 86248 transitions. [2021-08-06 13:19:36,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-08-06 13:19:36,996 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:36,996 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:37,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:37,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:37,196 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:37,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:37,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1073965809, now seen corresponding path program 10 times [2021-08-06 13:19:37,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:37,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207956392] [2021-08-06 13:19:37,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:37,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 390 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:19:37,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:37,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207956392] [2021-08-06 13:19:37,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207956392] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:37,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623773805] [2021-08-06 13:19:37,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:19:37,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:37,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:37,353 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:37,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-06 13:19:38,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:19:38,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:38,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-06 13:19:38,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 390 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:19:40,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623773805] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:40,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:40,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-08-06 13:19:40,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441196904] [2021-08-06 13:19:40,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 13:19:40,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:40,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 13:19:40,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:19:40,418 INFO L87 Difference]: Start difference. First operand 32720 states and 86248 transitions. Second operand has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 14 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:40,716 INFO L93 Difference]: Finished difference Result 41535 states and 108864 transitions. [2021-08-06 13:19:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 13:19:40,717 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 14 states have internal predecessors, (291), 0 states have call successors, (0), 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 269 [2021-08-06 13:19:40,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:40,792 INFO L225 Difference]: With dead ends: 41535 [2021-08-06 13:19:40,793 INFO L226 Difference]: Without dead ends: 41535 [2021-08-06 13:19:40,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 137.6ms TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-08-06 13:19:40,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41535 states. [2021-08-06 13:19:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41535 to 34540. [2021-08-06 13:19:41,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34540 states, 34538 states have (on average 2.6396722450634083) internal successors, (91169), 34539 states have internal predecessors, (91169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34540 states to 34540 states and 91169 transitions. [2021-08-06 13:19:41,438 INFO L78 Accepts]: Start accepts. Automaton has 34540 states and 91169 transitions. Word has length 269 [2021-08-06 13:19:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:41,438 INFO L470 AbstractCegarLoop]: Abstraction has 34540 states and 91169 transitions. [2021-08-06 13:19:41,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.785714285714285) internal successors, (291), 14 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 34540 states and 91169 transitions. [2021-08-06 13:19:41,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-08-06 13:19:41,494 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:41,494 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:41,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:41,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:41,695 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:41,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:41,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1759357153, now seen corresponding path program 7 times [2021-08-06 13:19:41,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:41,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74177217] [2021-08-06 13:19:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:41,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:19:41,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:41,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74177217] [2021-08-06 13:19:41,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74177217] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:41,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999299622] [2021-08-06 13:19:41,917 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:19:41,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:41,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:41,921 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:41,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-06 13:19:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:43,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:19:43,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:19:45,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999299622] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:45,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:45,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-08-06 13:19:45,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790814189] [2021-08-06 13:19:45,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:19:45,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:45,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:19:45,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:19:45,144 INFO L87 Difference]: Start difference. First operand 34540 states and 91169 transitions. Second operand has 19 states, 19 states have (on average 18.210526315789473) internal successors, (346), 19 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:45,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:45,518 INFO L93 Difference]: Finished difference Result 42602 states and 111719 transitions. [2021-08-06 13:19:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-06 13:19:45,518 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 18.210526315789473) internal successors, (346), 19 states have internal predecessors, (346), 0 states have call successors, (0), 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 299 [2021-08-06 13:19:45,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:45,598 INFO L225 Difference]: With dead ends: 42602 [2021-08-06 13:19:45,598 INFO L226 Difference]: Without dead ends: 42602 [2021-08-06 13:19:45,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 232.9ms TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-08-06 13:19:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42602 states. [2021-08-06 13:19:46,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42602 to 36775. [2021-08-06 13:19:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36775 states, 36773 states have (on average 2.6357109836020993) internal successors, (96923), 36774 states have internal predecessors, (96923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36775 states to 36775 states and 96923 transitions. [2021-08-06 13:19:46,355 INFO L78 Accepts]: Start accepts. Automaton has 36775 states and 96923 transitions. Word has length 299 [2021-08-06 13:19:46,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:46,355 INFO L470 AbstractCegarLoop]: Abstraction has 36775 states and 96923 transitions. [2021-08-06 13:19:46,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.210526315789473) internal successors, (346), 19 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 36775 states and 96923 transitions. [2021-08-06 13:19:46,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-08-06 13:19:46,409 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:46,409 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:46,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:46,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-06 13:19:46,611 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:46,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1080970879, now seen corresponding path program 4 times [2021-08-06 13:19:46,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:46,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96235274] [2021-08-06 13:19:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:46,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 58 proven. 227 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-08-06 13:19:46,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:46,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96235274] [2021-08-06 13:19:46,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96235274] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:46,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166710035] [2021-08-06 13:19:46,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:19:46,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:46,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:46,773 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:46,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-06 13:19:48,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:19:48,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:48,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:19:48,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:50,207 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 58 proven. 227 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-08-06 13:19:50,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166710035] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:50,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:50,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-08-06 13:19:50,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074859533] [2021-08-06 13:19:50,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 13:19:50,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 13:19:50,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:19:50,209 INFO L87 Difference]: Start difference. First operand 36775 states and 96923 transitions. Second operand has 13 states, 13 states have (on average 21.615384615384617) internal successors, (281), 13 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:50,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:50,543 INFO L93 Difference]: Finished difference Result 53420 states and 139671 transitions. [2021-08-06 13:19:50,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-06 13:19:50,544 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.615384615384617) internal successors, (281), 13 states have internal predecessors, (281), 0 states have call successors, (0), 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 302 [2021-08-06 13:19:50,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:50,658 INFO L225 Difference]: With dead ends: 53420 [2021-08-06 13:19:50,658 INFO L226 Difference]: Without dead ends: 53420 [2021-08-06 13:19:50,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-08-06 13:19:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53420 states. [2021-08-06 13:19:51,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53420 to 34955. [2021-08-06 13:19:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34955 states, 34953 states have (on average 2.632163190570194) internal successors, (92002), 34954 states have internal predecessors, (92002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34955 states to 34955 states and 92002 transitions. [2021-08-06 13:19:51,357 INFO L78 Accepts]: Start accepts. Automaton has 34955 states and 92002 transitions. Word has length 302 [2021-08-06 13:19:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:51,357 INFO L470 AbstractCegarLoop]: Abstraction has 34955 states and 92002 transitions. [2021-08-06 13:19:51,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.615384615384617) internal successors, (281), 13 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:51,358 INFO L276 IsEmpty]: Start isEmpty. Operand 34955 states and 92002 transitions. [2021-08-06 13:19:51,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-08-06 13:19:51,409 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:51,409 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:51,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:51,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-08-06 13:19:51,610 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:51,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:51,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1197384914, now seen corresponding path program 5 times [2021-08-06 13:19:51,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:51,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729539139] [2021-08-06 13:19:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:51,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 15 proven. 409 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-08-06 13:19:51,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:51,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729539139] [2021-08-06 13:19:51,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729539139] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:51,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24871405] [2021-08-06 13:19:51,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:19:51,785 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:51,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:51,786 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:51,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-06 13:19:54,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-06 13:19:54,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:19:54,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:19:54,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:19:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 15 proven. 386 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-06 13:19:55,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24871405] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:55,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:19:55,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-08-06 13:19:55,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921467479] [2021-08-06 13:19:55,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 13:19:55,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:19:55,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 13:19:55,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:19:55,848 INFO L87 Difference]: Start difference. First operand 34955 states and 92002 transitions. Second operand has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:19:56,250 INFO L93 Difference]: Finished difference Result 50680 states and 132431 transitions. [2021-08-06 13:19:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:19:56,251 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 0 states have call successors, (0), 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 303 [2021-08-06 13:19:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:19:56,363 INFO L225 Difference]: With dead ends: 50680 [2021-08-06 13:19:56,363 INFO L226 Difference]: Without dead ends: 50680 [2021-08-06 13:19:56,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-08-06 13:19:56,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50680 states. [2021-08-06 13:19:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50680 to 38115. [2021-08-06 13:19:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38115 states, 38113 states have (on average 2.637945058116653) internal successors, (100540), 38114 states have internal predecessors, (100540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38115 states to 38115 states and 100540 transitions. [2021-08-06 13:19:57,051 INFO L78 Accepts]: Start accepts. Automaton has 38115 states and 100540 transitions. Word has length 303 [2021-08-06 13:19:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:19:57,052 INFO L470 AbstractCegarLoop]: Abstraction has 38115 states and 100540 transitions. [2021-08-06 13:19:57,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:19:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 38115 states and 100540 transitions. [2021-08-06 13:19:57,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-08-06 13:19:57,104 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:19:57,104 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:19:57,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-06 13:19:57,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-06 13:19:57,313 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:19:57,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:19:57,313 INFO L82 PathProgramCache]: Analyzing trace with hash 436749678, now seen corresponding path program 6 times [2021-08-06 13:19:57,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:19:57,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346380335] [2021-08-06 13:19:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:19:57,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:19:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:19:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 59 proven. 398 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-06 13:19:57,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:19:57,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346380335] [2021-08-06 13:19:57,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346380335] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:19:57,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248591099] [2021-08-06 13:19:57,776 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:19:57,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:19:57,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:19:57,777 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:19:57,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-06 13:20:00,083 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-06 13:20:00,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:00,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-06 13:20:00,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 256 proven. 65 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-08-06 13:20:01,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248591099] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:01,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:01,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2021-08-06 13:20:01,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465658802] [2021-08-06 13:20:01,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-06 13:20:01,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:01,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-06 13:20:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-08-06 13:20:01,551 INFO L87 Difference]: Start difference. First operand 38115 states and 100540 transitions. Second operand has 22 states, 22 states have (on average 22.40909090909091) internal successors, (493), 22 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:02,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:02,432 INFO L93 Difference]: Finished difference Result 63300 states and 165509 transitions. [2021-08-06 13:20:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-06 13:20:02,432 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 22.40909090909091) internal successors, (493), 22 states have internal predecessors, (493), 0 states have call successors, (0), 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 303 [2021-08-06 13:20:02,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:02,703 INFO L225 Difference]: With dead ends: 63300 [2021-08-06 13:20:02,703 INFO L226 Difference]: Without dead ends: 63300 [2021-08-06 13:20:02,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 598.3ms TimeCoverageRelationStatistics Valid=623, Invalid=2029, Unknown=0, NotChecked=0, Total=2652 [2021-08-06 13:20:02,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63300 states. [2021-08-06 13:20:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63300 to 38375. [2021-08-06 13:20:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38375 states, 38373 states have (on average 2.639225497094311) internal successors, (101275), 38374 states have internal predecessors, (101275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38375 states to 38375 states and 101275 transitions. [2021-08-06 13:20:03,691 INFO L78 Accepts]: Start accepts. Automaton has 38375 states and 101275 transitions. Word has length 303 [2021-08-06 13:20:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:03,692 INFO L470 AbstractCegarLoop]: Abstraction has 38375 states and 101275 transitions. [2021-08-06 13:20:03,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 22.40909090909091) internal successors, (493), 22 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 38375 states and 101275 transitions. [2021-08-06 13:20:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-08-06 13:20:03,749 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:03,750 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:03,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:03,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:03,957 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:03,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:03,959 INFO L82 PathProgramCache]: Analyzing trace with hash -280998547, now seen corresponding path program 11 times [2021-08-06 13:20:03,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:03,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521210337] [2021-08-06 13:20:03,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:03,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 603 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-06 13:20:04,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:04,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521210337] [2021-08-06 13:20:04,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521210337] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:04,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235082817] [2021-08-06 13:20:04,178 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:20:04,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:04,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:04,179 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:04,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-06 13:20:06,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-08-06 13:20:06,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:06,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:20:06,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:20:08,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235082817] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:08,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:08,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 16 [2021-08-06 13:20:08,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231179711] [2021-08-06 13:20:08,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-06 13:20:08,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:08,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-06 13:20:08,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-08-06 13:20:08,387 INFO L87 Difference]: Start difference. First operand 38375 states and 101275 transitions. Second operand has 16 states, 16 states have (on average 20.375) internal successors, (326), 16 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:08,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:08,772 INFO L93 Difference]: Finished difference Result 45655 states and 119469 transitions. [2021-08-06 13:20:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 13:20:08,773 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.375) internal successors, (326), 16 states have internal predecessors, (326), 0 states have call successors, (0), 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 304 [2021-08-06 13:20:08,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:08,862 INFO L225 Difference]: With dead ends: 45655 [2021-08-06 13:20:08,863 INFO L226 Difference]: Without dead ends: 45655 [2021-08-06 13:20:08,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 187.3ms TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2021-08-06 13:20:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45655 states. [2021-08-06 13:20:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45655 to 38375. [2021-08-06 13:20:09,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38375 states, 38373 states have (on average 2.639225497094311) internal successors, (101275), 38374 states have internal predecessors, (101275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38375 states to 38375 states and 101275 transitions. [2021-08-06 13:20:09,763 INFO L78 Accepts]: Start accepts. Automaton has 38375 states and 101275 transitions. Word has length 304 [2021-08-06 13:20:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:09,763 INFO L470 AbstractCegarLoop]: Abstraction has 38375 states and 101275 transitions. [2021-08-06 13:20:09,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.375) internal successors, (326), 16 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:09,764 INFO L276 IsEmpty]: Start isEmpty. Operand 38375 states and 101275 transitions. [2021-08-06 13:20:09,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-08-06 13:20:09,820 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:09,820 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:09,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:10,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-06 13:20:10,021 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:10,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:10,021 INFO L82 PathProgramCache]: Analyzing trace with hash -910703165, now seen corresponding path program 12 times [2021-08-06 13:20:10,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:10,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318509732] [2021-08-06 13:20:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:10,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:20:10,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:10,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318509732] [2021-08-06 13:20:10,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318509732] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:10,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713987317] [2021-08-06 13:20:10,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:20:10,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:10,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:10,434 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:10,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-06 13:20:13,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-06 13:20:13,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:13,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:20:13,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:20:14,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713987317] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:14,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:14,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-08-06 13:20:14,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884803410] [2021-08-06 13:20:14,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-06 13:20:14,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:14,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-06 13:20:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-08-06 13:20:14,601 INFO L87 Difference]: Start difference. First operand 38375 states and 101275 transitions. Second operand has 16 states, 16 states have (on average 20.375) internal successors, (326), 16 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:14,978 INFO L93 Difference]: Finished difference Result 52135 states and 136332 transitions. [2021-08-06 13:20:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:20:14,978 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.375) internal successors, (326), 16 states have internal predecessors, (326), 0 states have call successors, (0), 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 304 [2021-08-06 13:20:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:15,097 INFO L225 Difference]: With dead ends: 52135 [2021-08-06 13:20:15,098 INFO L226 Difference]: Without dead ends: 52135 [2021-08-06 13:20:15,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 179.1ms TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2021-08-06 13:20:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52135 states. [2021-08-06 13:20:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52135 to 40195. [2021-08-06 13:20:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40195 states, 40193 states have (on average 2.642151618441022) internal successors, (106196), 40194 states have internal predecessors, (106196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:16,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40195 states to 40195 states and 106196 transitions. [2021-08-06 13:20:16,235 INFO L78 Accepts]: Start accepts. Automaton has 40195 states and 106196 transitions. Word has length 304 [2021-08-06 13:20:16,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:16,236 INFO L470 AbstractCegarLoop]: Abstraction has 40195 states and 106196 transitions. [2021-08-06 13:20:16,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.375) internal successors, (326), 16 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 40195 states and 106196 transitions. [2021-08-06 13:20:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-08-06 13:20:16,297 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:16,297 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:16,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:16,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-06 13:20:16,501 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:16,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:16,501 INFO L82 PathProgramCache]: Analyzing trace with hash -616217299, now seen corresponding path program 13 times [2021-08-06 13:20:16,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:16,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881229132] [2021-08-06 13:20:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:16,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:20:16,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:16,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881229132] [2021-08-06 13:20:16,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881229132] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:16,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484565381] [2021-08-06 13:20:16,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:20:16,701 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:16,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:16,705 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:16,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-06 13:20:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:19,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-06 13:20:19,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:20:20,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484565381] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:20,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:20,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-08-06 13:20:20,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341584347] [2021-08-06 13:20:20,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-06 13:20:20,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:20,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-06 13:20:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-08-06 13:20:20,666 INFO L87 Difference]: Start difference. First operand 40195 states and 106196 transitions. Second operand has 16 states, 16 states have (on average 20.375) internal successors, (326), 16 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:21,071 INFO L93 Difference]: Finished difference Result 52985 states and 139007 transitions. [2021-08-06 13:20:21,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:20:21,071 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.375) internal successors, (326), 16 states have internal predecessors, (326), 0 states have call successors, (0), 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 304 [2021-08-06 13:20:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:21,181 INFO L225 Difference]: With dead ends: 52985 [2021-08-06 13:20:21,181 INFO L226 Difference]: Without dead ends: 52985 [2021-08-06 13:20:21,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 194.8ms TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:20:21,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52985 states. [2021-08-06 13:20:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52985 to 43095. [2021-08-06 13:20:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43095 states, 43093 states have (on average 2.6470888543382918) internal successors, (114071), 43094 states have internal predecessors, (114071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43095 states to 43095 states and 114071 transitions. [2021-08-06 13:20:22,071 INFO L78 Accepts]: Start accepts. Automaton has 43095 states and 114071 transitions. Word has length 304 [2021-08-06 13:20:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:22,071 INFO L470 AbstractCegarLoop]: Abstraction has 43095 states and 114071 transitions. [2021-08-06 13:20:22,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.375) internal successors, (326), 16 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 43095 states and 114071 transitions. [2021-08-06 13:20:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-08-06 13:20:22,138 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:22,138 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:22,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:22,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:22,339 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:22,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:22,340 INFO L82 PathProgramCache]: Analyzing trace with hash -156514019, now seen corresponding path program 8 times [2021-08-06 13:20:22,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:22,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079544223] [2021-08-06 13:20:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:22,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:20:22,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:22,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079544223] [2021-08-06 13:20:22,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079544223] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:22,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261723424] [2021-08-06 13:20:22,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:20:22,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:22,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:22,977 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:22,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-06 13:20:25,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:20:25,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:25,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:20:25,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:20:27,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261723424] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:27,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:27,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-08-06 13:20:27,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839084165] [2021-08-06 13:20:27,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-06 13:20:27,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-06 13:20:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-08-06 13:20:27,352 INFO L87 Difference]: Start difference. First operand 43095 states and 114071 transitions. Second operand has 21 states, 21 states have (on average 18.142857142857142) internal successors, (381), 21 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:27,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:27,860 INFO L93 Difference]: Finished difference Result 52842 states and 139004 transitions. [2021-08-06 13:20:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-06 13:20:27,860 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 18.142857142857142) internal successors, (381), 21 states have internal predecessors, (381), 0 states have call successors, (0), 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 334 [2021-08-06 13:20:27,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:27,970 INFO L225 Difference]: With dead ends: 52842 [2021-08-06 13:20:27,971 INFO L226 Difference]: Without dead ends: 52842 [2021-08-06 13:20:27,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 312.5ms TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2021-08-06 13:20:28,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52842 states. [2021-08-06 13:20:28,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52842 to 46410. [2021-08-06 13:20:28,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46410 states, 46408 states have (on average 2.6456429925874847) internal successors, (122779), 46409 states have internal predecessors, (122779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:29,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46410 states to 46410 states and 122779 transitions. [2021-08-06 13:20:29,026 INFO L78 Accepts]: Start accepts. Automaton has 46410 states and 122779 transitions. Word has length 334 [2021-08-06 13:20:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:29,026 INFO L470 AbstractCegarLoop]: Abstraction has 46410 states and 122779 transitions. [2021-08-06 13:20:29,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 18.142857142857142) internal successors, (381), 21 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 46410 states and 122779 transitions. [2021-08-06 13:20:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-08-06 13:20:29,092 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:29,092 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:29,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:29,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:29,297 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:29,297 INFO L82 PathProgramCache]: Analyzing trace with hash -2127766034, now seen corresponding path program 7 times [2021-08-06 13:20:29,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:29,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034312673] [2021-08-06 13:20:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:29,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 599 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-08-06 13:20:29,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:29,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034312673] [2021-08-06 13:20:29,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034312673] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:29,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263553329] [2021-08-06 13:20:29,716 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:20:29,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:29,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:29,717 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:29,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-06 13:20:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:32,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:20:32,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-06 13:20:34,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263553329] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:34,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:34,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-08-06 13:20:34,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688812902] [2021-08-06 13:20:34,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:20:34,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:20:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:20:34,282 INFO L87 Difference]: Start difference. First operand 46410 states and 122779 transitions. Second operand has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:34,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:34,717 INFO L93 Difference]: Finished difference Result 66690 states and 175251 transitions. [2021-08-06 13:20:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 13:20:34,718 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 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 338 [2021-08-06 13:20:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:34,861 INFO L225 Difference]: With dead ends: 66690 [2021-08-06 13:20:34,862 INFO L226 Difference]: Without dead ends: 66690 [2021-08-06 13:20:34,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 192.5ms TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-08-06 13:20:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66690 states. [2021-08-06 13:20:35,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66690 to 47490. [2021-08-06 13:20:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47490 states, 47488 states have (on average 2.647679413746631) internal successors, (125733), 47489 states have internal predecessors, (125733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47490 states to 47490 states and 125733 transitions. [2021-08-06 13:20:36,029 INFO L78 Accepts]: Start accepts. Automaton has 47490 states and 125733 transitions. Word has length 338 [2021-08-06 13:20:36,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:36,029 INFO L470 AbstractCegarLoop]: Abstraction has 47490 states and 125733 transitions. [2021-08-06 13:20:36,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 47490 states and 125733 transitions. [2021-08-06 13:20:36,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-08-06 13:20:36,096 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:36,096 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:36,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:36,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:36,298 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:36,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:36,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1041922384, now seen corresponding path program 8 times [2021-08-06 13:20:36,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:36,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556979681] [2021-08-06 13:20:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:36,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 599 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-08-06 13:20:36,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:36,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556979681] [2021-08-06 13:20:36,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556979681] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:36,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244924656] [2021-08-06 13:20:36,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:20:36,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:36,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:36,741 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:36,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-06 13:20:39,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:20:39,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:39,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:20:39,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-06 13:20:41,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244924656] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:41,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:41,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-08-06 13:20:41,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595720109] [2021-08-06 13:20:41,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:20:41,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:20:41,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:20:41,308 INFO L87 Difference]: Start difference. First operand 47490 states and 125733 transitions. Second operand has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:41,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:41,763 INFO L93 Difference]: Finished difference Result 65465 states and 171866 transitions. [2021-08-06 13:20:41,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:20:41,764 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 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 338 [2021-08-06 13:20:41,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:41,910 INFO L225 Difference]: With dead ends: 65465 [2021-08-06 13:20:41,910 INFO L226 Difference]: Without dead ends: 65465 [2021-08-06 13:20:41,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 193.7ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:20:41,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65465 states. [2021-08-06 13:20:42,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65465 to 49310. [2021-08-06 13:20:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49310 states, 49308 states have (on average 2.649752575646954) internal successors, (130654), 49309 states have internal predecessors, (130654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49310 states to 49310 states and 130654 transitions. [2021-08-06 13:20:42,961 INFO L78 Accepts]: Start accepts. Automaton has 49310 states and 130654 transitions. Word has length 338 [2021-08-06 13:20:42,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:42,961 INFO L470 AbstractCegarLoop]: Abstraction has 49310 states and 130654 transitions. [2021-08-06 13:20:42,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:42,962 INFO L276 IsEmpty]: Start isEmpty. Operand 49310 states and 130654 transitions. [2021-08-06 13:20:43,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-08-06 13:20:43,035 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:43,035 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:43,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:43,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:43,236 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:43,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:43,236 INFO L82 PathProgramCache]: Analyzing trace with hash -110980434, now seen corresponding path program 9 times [2021-08-06 13:20:43,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:43,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536744614] [2021-08-06 13:20:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:43,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 599 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-08-06 13:20:43,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:43,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536744614] [2021-08-06 13:20:43,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536744614] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:43,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041926401] [2021-08-06 13:20:43,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:20:43,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:43,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:43,712 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:43,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-06 13:20:46,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-06 13:20:46,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:46,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:20:46,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-06 13:20:48,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041926401] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:48,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:48,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-08-06 13:20:48,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37733592] [2021-08-06 13:20:48,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:20:48,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:20:48,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:20:48,666 INFO L87 Difference]: Start difference. First operand 49310 states and 130654 transitions. Second operand has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:49,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:49,094 INFO L93 Difference]: Finished difference Result 64030 states and 167819 transitions. [2021-08-06 13:20:49,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:20:49,095 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 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 338 [2021-08-06 13:20:49,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:49,236 INFO L225 Difference]: With dead ends: 64030 [2021-08-06 13:20:49,236 INFO L226 Difference]: Without dead ends: 64030 [2021-08-06 13:20:49,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 171.7ms TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:20:49,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64030 states. [2021-08-06 13:20:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64030 to 46410. [2021-08-06 13:20:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46410 states, 46408 states have (on average 2.6456429925874847) internal successors, (122779), 46409 states have internal predecessors, (122779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46410 states to 46410 states and 122779 transitions. [2021-08-06 13:20:50,221 INFO L78 Accepts]: Start accepts. Automaton has 46410 states and 122779 transitions. Word has length 338 [2021-08-06 13:20:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:50,222 INFO L470 AbstractCegarLoop]: Abstraction has 46410 states and 122779 transitions. [2021-08-06 13:20:50,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 46410 states and 122779 transitions. [2021-08-06 13:20:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-08-06 13:20:50,289 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:50,289 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:50,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:50,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-08-06 13:20:50,490 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:50,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:50,495 INFO L82 PathProgramCache]: Analyzing trace with hash -760818752, now seen corresponding path program 10 times [2021-08-06 13:20:50,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:50,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682468783] [2021-08-06 13:20:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:50,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-06 13:20:50,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:50,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682468783] [2021-08-06 13:20:50,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682468783] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:50,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839303362] [2021-08-06 13:20:50,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:20:50,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:50,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:50,700 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:50,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-08-06 13:20:54,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:20:54,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:20:54,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:20:54,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:20:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-06 13:20:55,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839303362] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:55,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:20:55,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-08-06 13:20:55,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66731130] [2021-08-06 13:20:55,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:20:55,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:20:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:20:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:20:55,895 INFO L87 Difference]: Start difference. First operand 46410 states and 122779 transitions. Second operand has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:56,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:20:56,304 INFO L93 Difference]: Finished difference Result 72780 states and 191427 transitions. [2021-08-06 13:20:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:20:56,305 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 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 338 [2021-08-06 13:20:56,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:20:56,455 INFO L225 Difference]: With dead ends: 72780 [2021-08-06 13:20:56,455 INFO L226 Difference]: Without dead ends: 72780 [2021-08-06 13:20:56,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 160.4ms TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:20:56,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72780 states. [2021-08-06 13:20:57,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72780 to 49310. [2021-08-06 13:20:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49310 states, 49308 states have (on average 2.649752575646954) internal successors, (130654), 49309 states have internal predecessors, (130654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49310 states to 49310 states and 130654 transitions. [2021-08-06 13:20:57,539 INFO L78 Accepts]: Start accepts. Automaton has 49310 states and 130654 transitions. Word has length 338 [2021-08-06 13:20:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:20:57,539 INFO L470 AbstractCegarLoop]: Abstraction has 49310 states and 130654 transitions. [2021-08-06 13:20:57,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:20:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 49310 states and 130654 transitions. [2021-08-06 13:20:57,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-08-06 13:20:57,608 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:20:57,608 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:20:57,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-08-06 13:20:57,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:57,808 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:20:57,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:20:57,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1886097630, now seen corresponding path program 11 times [2021-08-06 13:20:57,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:20:57,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775647816] [2021-08-06 13:20:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:20:57,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:20:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:20:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-06 13:20:58,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:20:58,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775647816] [2021-08-06 13:20:58,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775647816] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:20:58,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740037471] [2021-08-06 13:20:58,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:20:58,322 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:20:58,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:20:58,323 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:20:58,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-08-06 13:21:01,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-06 13:21:01,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:21:01,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:21:01,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:21:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-06 13:21:03,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740037471] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:03,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:21:03,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-08-06 13:21:03,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899772596] [2021-08-06 13:21:03,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:21:03,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:21:03,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:21:03,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:21:03,336 INFO L87 Difference]: Start difference. First operand 49310 states and 130654 transitions. Second operand has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:21:03,740 INFO L93 Difference]: Finished difference Result 69415 states and 182223 transitions. [2021-08-06 13:21:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:21:03,740 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 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 338 [2021-08-06 13:21:03,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:21:03,889 INFO L225 Difference]: With dead ends: 69415 [2021-08-06 13:21:03,889 INFO L226 Difference]: Without dead ends: 69415 [2021-08-06 13:21:03,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 158.5ms TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:21:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69415 states. [2021-08-06 13:21:04,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69415 to 52470. [2021-08-06 13:21:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52470 states, 52468 states have (on average 2.652893192040863) internal successors, (139192), 52469 states have internal predecessors, (139192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52470 states to 52470 states and 139192 transitions. [2021-08-06 13:21:05,037 INFO L78 Accepts]: Start accepts. Automaton has 52470 states and 139192 transitions. Word has length 338 [2021-08-06 13:21:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:21:05,038 INFO L470 AbstractCegarLoop]: Abstraction has 52470 states and 139192 transitions. [2021-08-06 13:21:05,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.666666666666668) internal successors, (325), 15 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 52470 states and 139192 transitions. [2021-08-06 13:21:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-08-06 13:21:05,124 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:21:05,125 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:21:05,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-08-06 13:21:05,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:21:05,325 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:21:05,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:21:05,326 INFO L82 PathProgramCache]: Analyzing trace with hash 752697359, now seen corresponding path program 14 times [2021-08-06 13:21:05,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:21:05,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981979879] [2021-08-06 13:21:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:21:05,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:21:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:21:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 828 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-06 13:21:05,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:21:05,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981979879] [2021-08-06 13:21:05,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981979879] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:05,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525531860] [2021-08-06 13:21:05,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:21:05,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:21:05,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:21:05,972 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:21:06,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-08-06 13:21:09,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:21:09,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:21:09,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:21:09,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:21:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:11,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525531860] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:11,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:21:11,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 18 [2021-08-06 13:21:11,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607728669] [2021-08-06 13:21:11,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:21:11,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:21:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:21:11,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:21:11,186 INFO L87 Difference]: Start difference. First operand 52470 states and 139192 transitions. Second operand has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:21:11,678 INFO L93 Difference]: Finished difference Result 62400 states and 164204 transitions. [2021-08-06 13:21:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:21:11,679 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 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 339 [2021-08-06 13:21:11,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:21:11,912 INFO L225 Difference]: With dead ends: 62400 [2021-08-06 13:21:11,912 INFO L226 Difference]: Without dead ends: 62400 [2021-08-06 13:21:11,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 269.8ms TimeCoverageRelationStatistics Valid=338, Invalid=784, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:21:11,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62400 states. [2021-08-06 13:21:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62400 to 53550. [2021-08-06 13:21:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53550 states, 53548 states have (on average 2.6545529244789723) internal successors, (142146), 53549 states have internal predecessors, (142146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53550 states to 53550 states and 142146 transitions. [2021-08-06 13:21:12,893 INFO L78 Accepts]: Start accepts. Automaton has 53550 states and 142146 transitions. Word has length 339 [2021-08-06 13:21:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:21:12,893 INFO L470 AbstractCegarLoop]: Abstraction has 53550 states and 142146 transitions. [2021-08-06 13:21:12,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 53550 states and 142146 transitions. [2021-08-06 13:21:12,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-08-06 13:21:12,992 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:21:12,992 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:21:13,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-08-06 13:21:13,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-08-06 13:21:13,192 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:21:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:21:13,193 INFO L82 PathProgramCache]: Analyzing trace with hash -156256263, now seen corresponding path program 15 times [2021-08-06 13:21:13,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:21:13,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232746476] [2021-08-06 13:21:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:21:13,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:21:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:21:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:13,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:21:13,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232746476] [2021-08-06 13:21:13,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232746476] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:13,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762115560] [2021-08-06 13:21:13,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:21:13,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:21:13,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:21:13,760 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:21:13,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-08-06 13:21:17,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-08-06 13:21:17,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:21:17,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:21:17,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:21:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:19,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762115560] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:19,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:21:19,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-08-06 13:21:19,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081851370] [2021-08-06 13:21:19,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:21:19,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:21:19,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:21:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:21:19,048 INFO L87 Difference]: Start difference. First operand 53550 states and 142146 transitions. Second operand has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:21:19,563 INFO L93 Difference]: Finished difference Result 66585 states and 174621 transitions. [2021-08-06 13:21:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 13:21:19,564 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 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 339 [2021-08-06 13:21:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:21:19,703 INFO L225 Difference]: With dead ends: 66585 [2021-08-06 13:21:19,703 INFO L226 Difference]: Without dead ends: 66585 [2021-08-06 13:21:19,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 219.1ms TimeCoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:21:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66585 states. [2021-08-06 13:21:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66585 to 52470. [2021-08-06 13:21:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52470 states, 52468 states have (on average 2.652893192040863) internal successors, (139192), 52469 states have internal predecessors, (139192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52470 states to 52470 states and 139192 transitions. [2021-08-06 13:21:20,822 INFO L78 Accepts]: Start accepts. Automaton has 52470 states and 139192 transitions. Word has length 339 [2021-08-06 13:21:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:21:20,822 INFO L470 AbstractCegarLoop]: Abstraction has 52470 states and 139192 transitions. [2021-08-06 13:21:20,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 52470 states and 139192 transitions. [2021-08-06 13:21:21,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-08-06 13:21:21,183 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:21:21,201 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:21:21,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-08-06 13:21:21,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-08-06 13:21:21,421 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:21:21,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:21:21,421 INFO L82 PathProgramCache]: Analyzing trace with hash -785960881, now seen corresponding path program 16 times [2021-08-06 13:21:21,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:21:21,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385563880] [2021-08-06 13:21:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:21:21,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:21:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:21:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:21,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:21:21,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385563880] [2021-08-06 13:21:21,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385563880] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:21,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789344186] [2021-08-06 13:21:21,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-06 13:21:21,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:21:21,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:21:21,636 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:21:21,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-08-06 13:21:25,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-06 13:21:25,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:21:25,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:21:25,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:21:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:27,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789344186] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:27,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:21:27,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-08-06 13:21:27,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594134706] [2021-08-06 13:21:27,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:21:27,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:21:27,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:21:27,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:21:27,096 INFO L87 Difference]: Start difference. First operand 52470 states and 139192 transitions. Second operand has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:21:27,613 INFO L93 Difference]: Finished difference Result 68675 states and 180658 transitions. [2021-08-06 13:21:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-06 13:21:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 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 339 [2021-08-06 13:21:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:21:27,760 INFO L225 Difference]: With dead ends: 68675 [2021-08-06 13:21:27,760 INFO L226 Difference]: Without dead ends: 68675 [2021-08-06 13:21:27,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 216.6ms TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2021-08-06 13:21:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68675 states. [2021-08-06 13:21:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68675 to 55370. [2021-08-06 13:21:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55370 states, 55368 states have (on average 2.6561732408611474) internal successors, (147067), 55369 states have internal predecessors, (147067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55370 states to 55370 states and 147067 transitions. [2021-08-06 13:21:28,901 INFO L78 Accepts]: Start accepts. Automaton has 55370 states and 147067 transitions. Word has length 339 [2021-08-06 13:21:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:21:28,902 INFO L470 AbstractCegarLoop]: Abstraction has 55370 states and 147067 transitions. [2021-08-06 13:21:28,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:28,902 INFO L276 IsEmpty]: Start isEmpty. Operand 55370 states and 147067 transitions. [2021-08-06 13:21:28,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-08-06 13:21:28,993 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:21:28,993 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:21:29,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-08-06 13:21:29,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-08-06 13:21:29,194 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:21:29,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:21:29,194 INFO L82 PathProgramCache]: Analyzing trace with hash -491475015, now seen corresponding path program 17 times [2021-08-06 13:21:29,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:21:29,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856400490] [2021-08-06 13:21:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:21:29,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:21:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:21:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:29,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:21:29,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856400490] [2021-08-06 13:21:29,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856400490] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:29,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251179059] [2021-08-06 13:21:29,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-06 13:21:29,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:21:29,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:21:29,772 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:21:29,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-08-06 13:21:33,599 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-08-06 13:21:33,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:21:33,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:21:33,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:21:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:35,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251179059] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:35,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:21:35,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-08-06 13:21:35,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051425474] [2021-08-06 13:21:35,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:21:35,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:21:35,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:21:35,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:21:35,227 INFO L87 Difference]: Start difference. First operand 55370 states and 147067 transitions. Second operand has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:21:35,761 INFO L93 Difference]: Finished difference Result 71265 states and 187341 transitions. [2021-08-06 13:21:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-06 13:21:35,761 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 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 339 [2021-08-06 13:21:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:21:35,922 INFO L225 Difference]: With dead ends: 71265 [2021-08-06 13:21:35,922 INFO L226 Difference]: Without dead ends: 71265 [2021-08-06 13:21:35,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 251.2ms TimeCoverageRelationStatistics Valid=301, Invalid=821, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:21:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71265 states. [2021-08-06 13:21:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71265 to 58270. [2021-08-06 13:21:37,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58270 states, 58268 states have (on average 2.659126793437221) internal successors, (154942), 58269 states have internal predecessors, (154942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58270 states to 58270 states and 154942 transitions. [2021-08-06 13:21:37,223 INFO L78 Accepts]: Start accepts. Automaton has 58270 states and 154942 transitions. Word has length 339 [2021-08-06 13:21:37,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:21:37,224 INFO L470 AbstractCegarLoop]: Abstraction has 58270 states and 154942 transitions. [2021-08-06 13:21:37,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:37,224 INFO L276 IsEmpty]: Start isEmpty. Operand 58270 states and 154942 transitions. [2021-08-06 13:21:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-08-06 13:21:37,320 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:21:37,321 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:21:37,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-08-06 13:21:37,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-08-06 13:21:37,521 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:21:37,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:21:37,522 INFO L82 PathProgramCache]: Analyzing trace with hash -136556401, now seen corresponding path program 18 times [2021-08-06 13:21:37,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:21:37,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759433896] [2021-08-06 13:21:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:21:37,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:21:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:21:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:38,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:21:38,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759433896] [2021-08-06 13:21:38,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759433896] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:38,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819080184] [2021-08-06 13:21:38,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:21:38,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:21:38,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:21:38,039 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:21:38,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-08-06 13:21:42,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-08-06 13:21:42,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:21:42,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:21:42,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:21:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:43,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819080184] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:43,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:21:43,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-08-06 13:21:43,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203577942] [2021-08-06 13:21:43,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:21:43,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:21:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:21:43,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:21:43,636 INFO L87 Difference]: Start difference. First operand 58270 states and 154942 transitions. Second operand has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:21:44,202 INFO L93 Difference]: Finished difference Result 75645 states and 198750 transitions. [2021-08-06 13:21:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:21:44,202 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 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 339 [2021-08-06 13:21:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:21:44,363 INFO L225 Difference]: With dead ends: 75645 [2021-08-06 13:21:44,363 INFO L226 Difference]: Without dead ends: 75645 [2021-08-06 13:21:44,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 251.4ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:21:44,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75645 states. [2021-08-06 13:21:45,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75645 to 60090. [2021-08-06 13:21:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60090 states, 60088 states have (on average 2.660481294101984) internal successors, (159863), 60089 states have internal predecessors, (159863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60090 states to 60090 states and 159863 transitions. [2021-08-06 13:21:45,706 INFO L78 Accepts]: Start accepts. Automaton has 60090 states and 159863 transitions. Word has length 339 [2021-08-06 13:21:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:21:45,706 INFO L470 AbstractCegarLoop]: Abstraction has 60090 states and 159863 transitions. [2021-08-06 13:21:45,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 60090 states and 159863 transitions. [2021-08-06 13:21:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-08-06 13:21:45,806 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:21:45,806 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:21:45,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-08-06 13:21:46,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:21:46,007 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:21:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:21:46,007 INFO L82 PathProgramCache]: Analyzing trace with hash 651982713, now seen corresponding path program 19 times [2021-08-06 13:21:46,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:21:46,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796581096] [2021-08-06 13:21:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:21:46,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:21:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:21:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:46,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:21:46,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796581096] [2021-08-06 13:21:46,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796581096] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:46,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421731799] [2021-08-06 13:21:46,518 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:21:46,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:21:46,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:21:46,561 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:21:46,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-08-06 13:21:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:21:50,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-06 13:21:50,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:21:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-06 13:21:52,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421731799] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:52,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:21:52,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-08-06 13:21:52,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21927843] [2021-08-06 13:21:52,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:21:52,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:21:52,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:21:52,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:21:52,213 INFO L87 Difference]: Start difference. First operand 60090 states and 159863 transitions. Second operand has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:21:52,731 INFO L93 Difference]: Finished difference Result 75685 states and 199547 transitions. [2021-08-06 13:21:52,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-06 13:21:52,731 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 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 339 [2021-08-06 13:21:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:21:52,990 INFO L225 Difference]: With dead ends: 75685 [2021-08-06 13:21:52,990 INFO L226 Difference]: Without dead ends: 75685 [2021-08-06 13:21:52,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 249.0ms TimeCoverageRelationStatistics Valid=319, Invalid=941, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:21:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75685 states. [2021-08-06 13:21:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75685 to 59010. [2021-08-06 13:21:53,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59010 states, 59008 states have (on average 2.659114018438178) internal successors, (156909), 59009 states have internal predecessors, (156909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:54,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59010 states to 59010 states and 156909 transitions. [2021-08-06 13:21:54,127 INFO L78 Accepts]: Start accepts. Automaton has 59010 states and 156909 transitions. Word has length 339 [2021-08-06 13:21:54,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:21:54,128 INFO L470 AbstractCegarLoop]: Abstraction has 59010 states and 156909 transitions. [2021-08-06 13:21:54,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.055555555555557) internal successors, (361), 18 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:21:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand 59010 states and 156909 transitions. [2021-08-06 13:21:54,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-08-06 13:21:54,473 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:21:54,474 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:21:54,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-08-06 13:21:54,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-08-06 13:21:54,701 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:21:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:21:54,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1591826849, now seen corresponding path program 9 times [2021-08-06 13:21:54,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:21:54,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848099002] [2021-08-06 13:21:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:21:54,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:21:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:21:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 27 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:21:54,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:21:54,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848099002] [2021-08-06 13:21:54,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848099002] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:21:54,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991091013] [2021-08-06 13:21:54,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-06 13:21:54,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:21:54,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:21:54,959 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:21:54,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-08-06 13:21:59,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-08-06 13:21:59,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:21:59,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:21:59,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:22:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 27 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:22:01,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991091013] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:22:01,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:22:01,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-08-06 13:22:01,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789506005] [2021-08-06 13:22:01,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-06 13:22:01,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:22:01,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-06 13:22:01,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-08-06 13:22:01,194 INFO L87 Difference]: Start difference. First operand 59010 states and 156909 transitions. Second operand has 23 states, 23 states have (on average 18.08695652173913) internal successors, (416), 23 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:22:01,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:22:01,789 INFO L93 Difference]: Finished difference Result 69362 states and 183271 transitions. [2021-08-06 13:22:01,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-06 13:22:01,790 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 18.08695652173913) internal successors, (416), 23 states have internal predecessors, (416), 0 states have call successors, (0), 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 369 [2021-08-06 13:22:01,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:22:01,936 INFO L225 Difference]: With dead ends: 69362 [2021-08-06 13:22:01,937 INFO L226 Difference]: Without dead ends: 69362 [2021-08-06 13:22:01,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 340.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-08-06 13:22:02,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69362 states. [2021-08-06 13:22:03,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69362 to 62325. [2021-08-06 13:22:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62325 states, 62323 states have (on average 2.6573977504292157) internal successors, (165617), 62324 states have internal predecessors, (165617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:22:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62325 states to 62325 states and 165617 transitions. [2021-08-06 13:22:03,282 INFO L78 Accepts]: Start accepts. Automaton has 62325 states and 165617 transitions. Word has length 369 [2021-08-06 13:22:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:22:03,282 INFO L470 AbstractCegarLoop]: Abstraction has 62325 states and 165617 transitions. [2021-08-06 13:22:03,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.08695652173913) internal successors, (416), 23 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:22:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 62325 states and 165617 transitions. [2021-08-06 13:22:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-08-06 13:22:03,387 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:22:03,387 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:22:03,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-08-06 13:22:03,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-08-06 13:22:03,588 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:22:03,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:22:03,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1573315695, now seen corresponding path program 12 times [2021-08-06 13:22:03,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:22:03,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148309790] [2021-08-06 13:22:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:22:03,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:22:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:22:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 18 proven. 629 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-08-06 13:22:04,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:22:04,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148309790] [2021-08-06 13:22:04,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148309790] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:22:04,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154637585] [2021-08-06 13:22:04,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-06 13:22:04,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:22:04,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:22:04,050 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:22:04,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-08-06 13:22:08,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-06 13:22:08,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:22:08,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:22:08,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:22:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 18 proven. 606 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-08-06 13:22:10,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154637585] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:22:10,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:22:10,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-08-06 13:22:10,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424685029] [2021-08-06 13:22:10,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 13:22:10,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:22:10,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 13:22:10,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-08-06 13:22:10,153 INFO L87 Difference]: Start difference. First operand 62325 states and 165617 transitions. Second operand has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:22:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:22:10,735 INFO L93 Difference]: Finished difference Result 104975 states and 276574 transitions. [2021-08-06 13:22:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:22:10,735 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 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 372 [2021-08-06 13:22:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:22:10,974 INFO L225 Difference]: With dead ends: 104975 [2021-08-06 13:22:10,974 INFO L226 Difference]: Without dead ends: 104975 [2021-08-06 13:22:10,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 157.6ms TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2021-08-06 13:22:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104975 states. [2021-08-06 13:22:12,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104975 to 71885. [2021-08-06 13:22:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71885 states, 71883 states have (on average 2.664816437822573) internal successors, (191555), 71884 states have internal predecessors, (191555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:22:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71885 states to 71885 states and 191555 transitions. [2021-08-06 13:22:13,062 INFO L78 Accepts]: Start accepts. Automaton has 71885 states and 191555 transitions. Word has length 372 [2021-08-06 13:22:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:22:13,062 INFO L470 AbstractCegarLoop]: Abstraction has 71885 states and 191555 transitions. [2021-08-06 13:22:13,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:22:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 71885 states and 191555 transitions. [2021-08-06 13:22:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-08-06 13:22:13,186 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:22:13,186 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:22:13,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-08-06 13:22:13,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-08-06 13:22:13,387 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:22:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:22:13,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1511292044, now seen corresponding path program 13 times [2021-08-06 13:22:13,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:22:13,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790509368] [2021-08-06 13:22:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:22:13,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:22:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:22:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 824 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-08-06 13:22:13,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:22:13,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790509368] [2021-08-06 13:22:13,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790509368] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:22:13,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929360301] [2021-08-06 13:22:13,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-06 13:22:13,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:22:13,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:22:13,623 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:22:13,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-08-06 13:22:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:22:18,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:22:18,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:22:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-06 13:22:19,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929360301] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:22:19,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:22:19,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-08-06 13:22:19,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233215073] [2021-08-06 13:22:19,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:22:19,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:22:19,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:22:19,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:22:19,983 INFO L87 Difference]: Start difference. First operand 71885 states and 191555 transitions. Second operand has 17 states, 17 states have (on average 21.176470588235293) internal successors, (360), 17 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:22:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:22:20,659 INFO L93 Difference]: Finished difference Result 101435 states and 268768 transitions. [2021-08-06 13:22:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-06 13:22:20,660 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 21.176470588235293) internal successors, (360), 17 states have internal predecessors, (360), 0 states have call successors, (0), 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 373 [2021-08-06 13:22:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:22:20,901 INFO L225 Difference]: With dead ends: 101435 [2021-08-06 13:22:20,901 INFO L226 Difference]: Without dead ends: 101435 [2021-08-06 13:22:20,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 240.4ms TimeCoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:22:21,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101435 states. [2021-08-06 13:22:22,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101435 to 74045. [2021-08-06 13:22:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74045 states, 74043 states have (on average 2.6668692516510677) internal successors, (197463), 74044 states have internal predecessors, (197463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:22:23,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74045 states to 74045 states and 197463 transitions. [2021-08-06 13:22:23,034 INFO L78 Accepts]: Start accepts. Automaton has 74045 states and 197463 transitions. Word has length 373 [2021-08-06 13:22:23,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:22:23,034 INFO L470 AbstractCegarLoop]: Abstraction has 74045 states and 197463 transitions. [2021-08-06 13:22:23,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.176470588235293) internal successors, (360), 17 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:22:23,035 INFO L276 IsEmpty]: Start isEmpty. Operand 74045 states and 197463 transitions. [2021-08-06 13:22:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-08-06 13:22:23,188 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:22:23,188 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:22:23,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-08-06 13:22:23,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:22:23,389 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-06 13:22:23,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:22:23,389 INFO L82 PathProgramCache]: Analyzing trace with hash 386013166, now seen corresponding path program 14 times [2021-08-06 13:22:23,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:22:23,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222354038] [2021-08-06 13:22:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:22:23,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:22:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:22:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 824 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-08-06 13:22:23,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:22:23,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222354038] [2021-08-06 13:22:23,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222354038] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:22:23,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876599159] [2021-08-06 13:22:23,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-06 13:22:23,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-06 13:22:23,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:22:23,605 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-06 13:22:23,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-08-06 13:22:28,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-06 13:22:28,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-06 13:22:28,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-06 13:22:28,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-06 13:22:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-06 13:22:30,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876599159] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-06 13:22:30,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-06 13:22:30,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-08-06 13:22:30,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762432579] [2021-08-06 13:22:30,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-06 13:22:30,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:22:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-06 13:22:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-06 13:22:30,303 INFO L87 Difference]: Start difference. First operand 74045 states and 197463 transitions. Second operand has 17 states, 17 states have (on average 21.176470588235293) internal successors, (360), 17 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)