/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:25:21,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:25:21,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:25:21,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:25:21,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:25:21,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:25:21,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:25:21,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:25:21,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:25:21,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:25:21,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:25:21,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:25:21,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:25:21,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:25:21,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:25:21,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:25:21,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:25:21,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:25:21,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:25:21,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:25:22,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:25:22,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:25:22,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:25:22,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:25:22,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:25:22,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:25:22,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:25:22,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:25:22,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:25:22,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:25:22,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:25:22,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:25:22,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:25:22,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:25:22,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:25:22,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:25:22,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:25:22,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:25:22,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:25:22,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:25:22,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:25:22,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:25:22,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:25:22,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:25:22,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:25:22,093 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:25:22,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:25:22,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:25:22,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:25:22,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:25:22,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:25:22,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:25:22,096 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:25:22,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:25:22,097 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:25:22,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:25:22,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:25:22,098 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:25:22,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:25:22,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:25:22,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:25:22,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:25:22,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:25:22,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:25:22,099 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:25:22,100 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:25:22,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:25:22,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:25:22,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:25:22,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:25:22,745 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:25:22,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2021-02-22 02:25:22,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83d02964/48436626476b4381aa3e275187a571a2/FLAG872f1f3bf [2021-02-22 02:25:23,863 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:25:23,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2021-02-22 02:25:23,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83d02964/48436626476b4381aa3e275187a571a2/FLAG872f1f3bf [2021-02-22 02:25:24,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83d02964/48436626476b4381aa3e275187a571a2 [2021-02-22 02:25:24,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:25:24,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:25:24,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:25:24,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:25:24,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:25:24,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:25:24" (1/1) ... [2021-02-22 02:25:24,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e09bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24, skipping insertion in model container [2021-02-22 02:25:24,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:25:24" (1/1) ... [2021-02-22 02:25:24,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:25:24,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:25:24,431 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.02.cil.c[401,414] [2021-02-22 02:25:24,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:25:24,535 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:25:24,555 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.02.cil.c[401,414] [2021-02-22 02:25:24,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:25:24,713 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:25:24,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24 WrapperNode [2021-02-22 02:25:24,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:25:24,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:25:24,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:25:24,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:25:24,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24" (1/1) ... [2021-02-22 02:25:24,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24" (1/1) ... [2021-02-22 02:25:24,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24" (1/1) ... [2021-02-22 02:25:24,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24" (1/1) ... [2021-02-22 02:25:24,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24" (1/1) ... [2021-02-22 02:25:24,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24" (1/1) ... [2021-02-22 02:25:24,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24" (1/1) ... [2021-02-22 02:25:24,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:25:24,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:25:24,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:25:24,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:25:24,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:25:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:25:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:25:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:25:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-02-22 02:25:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2021-02-22 02:25:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2021-02-22 02:25:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2021-02-22 02:25:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2021-02-22 02:25:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2021-02-22 02:25:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2021-02-22 02:25:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-02-22 02:25:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2021-02-22 02:25:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-02-22 02:25:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-02-22 02:25:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-02-22 02:25:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-02-22 02:25:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-02-22 02:25:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-02-22 02:25:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2021-02-22 02:25:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2021-02-22 02:25:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2021-02-22 02:25:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2021-02-22 02:25:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2021-02-22 02:25:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:25:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:25:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:25:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:25:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:25:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:25:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-02-22 02:25:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2021-02-22 02:25:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2021-02-22 02:25:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2021-02-22 02:25:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-02-22 02:25:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure master [2021-02-22 02:25:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2021-02-22 02:25:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2021-02-22 02:25:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-02-22 02:25:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2021-02-22 02:25:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-02-22 02:25:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-02-22 02:25:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-02-22 02:25:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-02-22 02:25:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-02-22 02:25:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2021-02-22 02:25:24,953 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2021-02-22 02:25:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2021-02-22 02:25:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2021-02-22 02:25:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2021-02-22 02:25:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:25:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:25:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:25:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:25:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:25:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:25:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:25:26,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:25:26,032 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-22 02:25:26,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:25:26 BoogieIcfgContainer [2021-02-22 02:25:26,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:25:26,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:25:26,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:25:26,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:25:26,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:25:24" (1/3) ... [2021-02-22 02:25:26,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6284c2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:25:26, skipping insertion in model container [2021-02-22 02:25:26,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:25:24" (2/3) ... [2021-02-22 02:25:26,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6284c2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:25:26, skipping insertion in model container [2021-02-22 02:25:26,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:25:26" (3/3) ... [2021-02-22 02:25:26,049 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2021-02-22 02:25:26,060 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:25:26,070 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:25:26,106 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:25:26,153 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:25:26,153 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:25:26,153 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:25:26,153 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:25:26,154 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:25:26,155 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:25:26,156 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:25:26,156 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:25:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states. [2021-02-22 02:25:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-02-22 02:25:26,263 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:25:26,266 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:25:26,267 INFO L428 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:25:26,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:25:26,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1980759665, now seen corresponding path program 1 times [2021-02-22 02:25:26,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:25:26,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999170562] [2021-02-22 02:25:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:25:26,443 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:25:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:26,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:26,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:26,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:26,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:26,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:26,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:25:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-22 02:25:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:25:27,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-22 02:25:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-22 02:25:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 02:25:27,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-22 02:25:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-22 02:25:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:25:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 02:25:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-22 02:25:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-22 02:25:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-22 02:25:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:27,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:27,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:25:27,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999170562] [2021-02-22 02:25:27,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:25:27,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 02:25:27,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624816766] [2021-02-22 02:25:27,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 02:25:27,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:25:27,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 02:25:27,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-22 02:25:27,445 INFO L87 Difference]: Start difference. First operand 266 states. Second operand 8 states. [2021-02-22 02:25:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:25:30,529 INFO L93 Difference]: Finished difference Result 637 states and 851 transitions. [2021-02-22 02:25:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-22 02:25:30,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2021-02-22 02:25:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:25:30,582 INFO L225 Difference]: With dead ends: 637 [2021-02-22 02:25:30,583 INFO L226 Difference]: Without dead ends: 402 [2021-02-22 02:25:30,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2021-02-22 02:25:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-02-22 02:25:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 254. [2021-02-22 02:25:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-22 02:25:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 306 transitions. [2021-02-22 02:25:30,839 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 306 transitions. Word has length 135 [2021-02-22 02:25:30,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:25:30,840 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 306 transitions. [2021-02-22 02:25:30,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 02:25:30,841 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 306 transitions. [2021-02-22 02:25:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-02-22 02:25:30,851 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:25:30,851 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:25:30,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:25:30,852 INFO L428 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:25:30,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:25:30,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1885481489, now seen corresponding path program 1 times [2021-02-22 02:25:30,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:25:30,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590851315] [2021-02-22 02:25:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:25:30,863 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:25:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:31,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:31,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:31,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:25:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-22 02:25:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-22 02:25:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-22 02:25:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:31,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-22 02:25:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-22 02:25:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:25:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 02:25:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-22 02:25:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-22 02:25:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-22 02:25:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:31,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:31,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:31,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:25:31,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590851315] [2021-02-22 02:25:31,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:25:31,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 02:25:31,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063612002] [2021-02-22 02:25:31,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 02:25:31,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:25:31,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 02:25:31,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-22 02:25:31,433 INFO L87 Difference]: Start difference. First operand 254 states and 306 transitions. Second operand 8 states. [2021-02-22 02:25:35,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:25:35,031 INFO L93 Difference]: Finished difference Result 1088 states and 1490 transitions. [2021-02-22 02:25:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 02:25:35,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2021-02-22 02:25:35,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:25:35,059 INFO L225 Difference]: With dead ends: 1088 [2021-02-22 02:25:35,060 INFO L226 Difference]: Without dead ends: 887 [2021-02-22 02:25:35,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-02-22 02:25:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-02-22 02:25:35,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 485. [2021-02-22 02:25:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2021-02-22 02:25:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 605 transitions. [2021-02-22 02:25:35,285 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 605 transitions. Word has length 135 [2021-02-22 02:25:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:25:35,286 INFO L480 AbstractCegarLoop]: Abstraction has 485 states and 605 transitions. [2021-02-22 02:25:35,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 02:25:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 605 transitions. [2021-02-22 02:25:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-02-22 02:25:35,290 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:25:35,291 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:25:35,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:25:35,292 INFO L428 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:25:35,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:25:35,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2002287986, now seen corresponding path program 1 times [2021-02-22 02:25:35,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:25:35,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188776080] [2021-02-22 02:25:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:25:35,296 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:25:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:35,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:25:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-22 02:25:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:25:35,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-22 02:25:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-22 02:25:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 02:25:35,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-22 02:25:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-22 02:25:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:25:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 02:25:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-22 02:25:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-22 02:25:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-22 02:25:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:35,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:35,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:25:35,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188776080] [2021-02-22 02:25:35,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:25:35,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 02:25:35,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370524884] [2021-02-22 02:25:35,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 02:25:35,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:25:35,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 02:25:35,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-22 02:25:35,624 INFO L87 Difference]: Start difference. First operand 485 states and 605 transitions. Second operand 8 states. [2021-02-22 02:25:37,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:25:37,932 INFO L93 Difference]: Finished difference Result 1199 states and 1564 transitions. [2021-02-22 02:25:37,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 02:25:37,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2021-02-22 02:25:37,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:25:37,942 INFO L225 Difference]: With dead ends: 1199 [2021-02-22 02:25:37,943 INFO L226 Difference]: Without dead ends: 765 [2021-02-22 02:25:37,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-02-22 02:25:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-02-22 02:25:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 474. [2021-02-22 02:25:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2021-02-22 02:25:38,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 588 transitions. [2021-02-22 02:25:38,156 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 588 transitions. Word has length 136 [2021-02-22 02:25:38,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:25:38,158 INFO L480 AbstractCegarLoop]: Abstraction has 474 states and 588 transitions. [2021-02-22 02:25:38,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 02:25:38,158 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 588 transitions. [2021-02-22 02:25:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-02-22 02:25:38,166 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:25:38,167 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:25:38,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:25:38,167 INFO L428 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:25:38,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:25:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash 617153439, now seen corresponding path program 1 times [2021-02-22 02:25:38,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:25:38,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644507264] [2021-02-22 02:25:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:25:38,176 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:25:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:38,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:38,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:38,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:25:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-22 02:25:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-22 02:25:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-22 02:25:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-22 02:25:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-22 02:25:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:38,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:25:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 02:25:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-22 02:25:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-22 02:25:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-22 02:25:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:38,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:38,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:25:38,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644507264] [2021-02-22 02:25:38,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:25:38,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 02:25:38,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646236817] [2021-02-22 02:25:38,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 02:25:38,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:25:38,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 02:25:38,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-02-22 02:25:38,531 INFO L87 Difference]: Start difference. First operand 474 states and 588 transitions. Second operand 8 states. [2021-02-22 02:25:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:25:42,812 INFO L93 Difference]: Finished difference Result 2153 states and 3097 transitions. [2021-02-22 02:25:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 02:25:42,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2021-02-22 02:25:42,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:25:42,834 INFO L225 Difference]: With dead ends: 2153 [2021-02-22 02:25:42,834 INFO L226 Difference]: Without dead ends: 1731 [2021-02-22 02:25:42,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-02-22 02:25:42,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2021-02-22 02:25:43,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 932. [2021-02-22 02:25:43,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2021-02-22 02:25:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1197 transitions. [2021-02-22 02:25:43,216 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1197 transitions. Word has length 140 [2021-02-22 02:25:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:25:43,219 INFO L480 AbstractCegarLoop]: Abstraction has 932 states and 1197 transitions. [2021-02-22 02:25:43,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 02:25:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1197 transitions. [2021-02-22 02:25:43,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-02-22 02:25:43,222 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:25:43,223 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:25:43,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:25:43,223 INFO L428 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:25:43,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:25:43,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1938792689, now seen corresponding path program 1 times [2021-02-22 02:25:43,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:25:43,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199931038] [2021-02-22 02:25:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:25:43,233 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:25:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:43,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:43,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:43,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:43,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:43,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:25:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:43,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-22 02:25:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-22 02:25:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-22 02:25:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-22 02:25:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-22 02:25:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 02:25:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 02:25:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-22 02:25:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-02-22 02:25:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-02-22 02:25:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:43,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:43,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:25:43,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199931038] [2021-02-22 02:25:43,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:25:43,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 02:25:43,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698999516] [2021-02-22 02:25:43,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 02:25:43,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:25:43,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 02:25:43,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-22 02:25:43,579 INFO L87 Difference]: Start difference. First operand 932 states and 1197 transitions. Second operand 7 states. [2021-02-22 02:25:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:25:47,408 INFO L93 Difference]: Finished difference Result 3775 states and 5418 transitions. [2021-02-22 02:25:47,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 02:25:47,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2021-02-22 02:25:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:25:47,450 INFO L225 Difference]: With dead ends: 3775 [2021-02-22 02:25:47,451 INFO L226 Difference]: Without dead ends: 2894 [2021-02-22 02:25:47,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-02-22 02:25:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2021-02-22 02:25:48,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1861. [2021-02-22 02:25:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1861 states. [2021-02-22 02:25:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2432 transitions. [2021-02-22 02:25:48,198 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2432 transitions. Word has length 145 [2021-02-22 02:25:48,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:25:48,199 INFO L480 AbstractCegarLoop]: Abstraction has 1861 states and 2432 transitions. [2021-02-22 02:25:48,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 02:25:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2432 transitions. [2021-02-22 02:25:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-02-22 02:25:48,209 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:25:48,209 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:25:48,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 02:25:48,210 INFO L428 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:25:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:25:48,210 INFO L82 PathProgramCache]: Analyzing trace with hash -769560739, now seen corresponding path program 1 times [2021-02-22 02:25:48,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:25:48,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038668460] [2021-02-22 02:25:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:25:48,303 WARN L141 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-02-22 02:25:48,349 WARN L147 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size 65 [2021-02-22 02:25:48,361 WARN L141 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-02-22 02:25:48,369 WARN L147 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size 65 [2021-02-22 02:25:48,414 WARN L141 QuantifierPusher]: treesize reduction 27, result has 22.9 percent of original size [2021-02-22 02:25:48,436 WARN L147 QuantifierPusher]: treesize reduction 27, result has 22.9 percent of original size 8 [2021-02-22 02:25:48,443 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-02-22 02:25:48,448 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size 40 [2021-02-22 02:25:48,454 WARN L141 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-02-22 02:25:48,461 WARN L147 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size 65 [2021-02-22 02:25:48,466 WARN L141 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size [2021-02-22 02:25:48,472 WARN L147 QuantifierPusher]: treesize reduction 3, result has 95.6 percent of original size 65 [2021-02-22 02:25:48,509 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size [2021-02-22 02:25:48,513 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.3 percent of original size 33 [2021-02-22 02:25:48,518 WARN L141 QuantifierPusher]: treesize reduction 15, result has 82.8 percent of original size [2021-02-22 02:25:48,526 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:25:48,534 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:48,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:25:48,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:48,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:25:48,548 WARN L147 QuantifierPusher]: treesize reduction 15, result has 82.8 percent of original size 72 [2021-02-22 02:25:48,552 WARN L141 QuantifierPusher]: treesize reduction 67, result has 1.5 percent of original size [2021-02-22 02:25:48,553 WARN L147 QuantifierPusher]: treesize reduction 67, result has 1.5 percent of original size 1 [2021-02-22 02:25:48,557 WARN L141 QuantifierPusher]: treesize reduction 67, result has 1.5 percent of original size [2021-02-22 02:25:48,558 WARN L147 QuantifierPusher]: treesize reduction 67, result has 1.5 percent of original size 1 [2021-02-22 02:25:48,561 WARN L141 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size [2021-02-22 02:25:48,564 WARN L147 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size 8 [2021-02-22 02:25:48,568 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-02-22 02:25:48,572 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size 40 [2021-02-22 02:25:48,575 WARN L141 QuantifierPusher]: treesize reduction 67, result has 1.5 percent of original size [2021-02-22 02:25:48,575 WARN L147 QuantifierPusher]: treesize reduction 67, result has 1.5 percent of original size 1 [2021-02-22 02:25:48,578 WARN L141 QuantifierPusher]: treesize reduction 67, result has 1.5 percent of original size [2021-02-22 02:25:48,579 WARN L147 QuantifierPusher]: treesize reduction 67, result has 1.5 percent of original size 1 [2021-02-22 02:25:48,582 WARN L141 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size [2021-02-22 02:25:48,585 WARN L147 QuantifierPusher]: treesize reduction 2, result has 80.0 percent of original size 8 [2021-02-22 02:25:48,588 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-02-22 02:25:48,592 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size 40 [2021-02-22 02:25:48,592 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:25:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:25:48,664 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:25:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:25:48,706 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:25:48,858 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:25:48,858 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:25:48,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 02:25:48,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:25:48 BoogieIcfgContainer [2021-02-22 02:25:48,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:25:48,933 INFO L168 Benchmark]: Toolchain (without parser) took 24802.16 ms. Allocated memory was 155.2 MB in the beginning and 470.8 MB in the end (delta: 315.6 MB). Free memory was 132.3 MB in the beginning and 207.3 MB in the end (delta: -75.0 MB). Peak memory consumption was 242.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:48,934 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 155.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:25:48,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.84 ms. Allocated memory is still 155.2 MB. Free memory was 131.1 MB in the beginning and 117.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:48,936 INFO L168 Benchmark]: Boogie Preprocessor took 77.34 ms. Allocated memory is still 155.2 MB. Free memory was 117.0 MB in the beginning and 115.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:48,937 INFO L168 Benchmark]: RCFGBuilder took 1240.11 ms. Allocated memory is still 155.2 MB. Free memory was 114.8 MB in the beginning and 102.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:48,938 INFO L168 Benchmark]: TraceAbstraction took 22892.91 ms. Allocated memory was 155.2 MB in the beginning and 470.8 MB in the end (delta: 315.6 MB). Free memory was 102.1 MB in the beginning and 207.3 MB in the end (delta: -105.2 MB). Peak memory consumption was 210.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:48,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 155.2 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 555.84 ms. Allocated memory is still 155.2 MB. Free memory was 131.1 MB in the beginning and 117.2 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.34 ms. Allocated memory is still 155.2 MB. Free memory was 117.0 MB in the beginning and 115.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1240.11 ms. Allocated memory is still 155.2 MB. Free memory was 114.8 MB in the beginning and 102.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22892.91 ms. Allocated memory was 155.2 MB in the beginning and 470.8 MB in the end (delta: 315.6 MB). Free memory was 102.1 MB in the beginning and 207.3 MB in the end (delta: -105.2 MB). Peak memory consumption was 210.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int m_pc = 0; [L18] int t1_pc = 0; [L19] int t2_pc = 0; [L20] int m_st ; [L21] int t1_st ; [L22] int t2_st ; [L23] int m_i ; [L24] int t1_i ; [L25] int t2_i ; [L26] int M_E = 2; [L27] int T1_E = 2; [L28] int T2_E = 2; [L29] int E_1 = 2; [L30] int E_2 = 2; [L565] int __retres1 ; [L569] CALL init_model() [L479] m_i = 1 [L480] t1_i = 1 [L481] t2_i = 1 [L569] RET init_model() [L570] CALL start_simulation() [L506] int kernel_st ; [L507] int tmp ; [L508] int tmp___0 ; [L512] kernel_st = 0 [L513] FCALL update_channels() [L514] CALL init_threads() [L213] COND TRUE m_i == 1 [L214] m_st = 0 [L218] COND TRUE t1_i == 1 [L219] t1_st = 0 [L223] COND TRUE t2_i == 1 [L224] t2_st = 0 [L514] RET init_threads() [L515] CALL fire_delta_events() [L326] COND FALSE !(M_E == 0) [L331] COND FALSE !(T1_E == 0) [L336] COND FALSE !(T2_E == 0) [L341] COND FALSE !(E_1 == 0) [L346] COND FALSE !(E_2 == 0) [L515] RET fire_delta_events() [L516] CALL activate_threads() [L389] int tmp ; [L390] int tmp___0 ; [L391] int tmp___1 ; [L395] CALL, EXPR is_master_triggered() [L145] int __retres1 ; [L148] COND FALSE !(m_pc == 1) [L158] __retres1 = 0 [L160] return (__retres1); [L395] RET, EXPR is_master_triggered() [L395] tmp = is_master_triggered() [L397] COND FALSE !(\read(tmp)) [L403] CALL, EXPR is_transmit1_triggered() [L164] int __retres1 ; [L167] COND FALSE !(t1_pc == 1) [L177] __retres1 = 0 [L179] return (__retres1); [L403] RET, EXPR is_transmit1_triggered() [L403] tmp___0 = is_transmit1_triggered() [L405] COND FALSE !(\read(tmp___0)) [L411] CALL, EXPR is_transmit2_triggered() [L183] int __retres1 ; [L186] COND FALSE !(t2_pc == 1) [L196] __retres1 = 0 [L198] return (__retres1); [L411] RET, EXPR is_transmit2_triggered() [L411] tmp___1 = is_transmit2_triggered() [L413] COND FALSE !(\read(tmp___1)) [L516] RET activate_threads() [L517] CALL reset_delta_events() [L359] COND FALSE !(M_E == 1) [L364] COND FALSE !(T1_E == 1) [L369] COND FALSE !(T2_E == 1) [L374] COND FALSE !(E_1 == 1) [L379] COND FALSE !(E_2 == 1) [L517] RET reset_delta_events() [L520] COND TRUE 1 [L523] kernel_st = 1 [L524] CALL eval() [L259] int tmp ; [L263] COND TRUE 1 [L266] CALL, EXPR exists_runnable_thread() [L233] int __retres1 ; [L236] COND TRUE m_st == 0 [L237] __retres1 = 1 [L254] return (__retres1); [L266] RET, EXPR exists_runnable_thread() [L266] tmp = exists_runnable_thread() [L268] COND TRUE \read(tmp) [L273] COND TRUE m_st == 0 [L274] int tmp_ndt_1; [L275] tmp_ndt_1 = __VERIFIER_nondet_int() [L276] COND FALSE !(\read(tmp_ndt_1)) [L287] COND TRUE t1_st == 0 [L288] int tmp_ndt_2; [L289] tmp_ndt_2 = __VERIFIER_nondet_int() [L290] COND FALSE !(\read(tmp_ndt_2)) [L301] COND TRUE t2_st == 0 [L302] int tmp_ndt_3; [L303] tmp_ndt_3 = __VERIFIER_nondet_int() [L304] COND TRUE \read(tmp_ndt_3) [L306] t2_st = 1 [L307] CALL transmit2() [L115] COND TRUE t2_pc == 0 [L126] COND TRUE 1 [L128] t2_pc = 1 [L129] t2_st = 2 [L307] RET transmit2() [L263] COND TRUE 1 [L266] CALL, EXPR exists_runnable_thread() [L233] int __retres1 ; [L236] COND TRUE m_st == 0 [L237] __retres1 = 1 [L254] return (__retres1); [L266] RET, EXPR exists_runnable_thread() [L266] tmp = exists_runnable_thread() [L268] COND TRUE \read(tmp) [L273] COND TRUE m_st == 0 [L274] int tmp_ndt_1; [L275] tmp_ndt_1 = __VERIFIER_nondet_int() [L276] COND FALSE !(\read(tmp_ndt_1)) [L287] COND TRUE t1_st == 0 [L288] int tmp_ndt_2; [L289] tmp_ndt_2 = __VERIFIER_nondet_int() [L290] COND FALSE !(\read(tmp_ndt_2)) [L301] COND TRUE t2_st == 0 [L302] int tmp_ndt_3; [L303] tmp_ndt_3 = __VERIFIER_nondet_int() [L304] COND TRUE \read(tmp_ndt_3) [L306] t2_st = 1 [L307] CALL transmit2() [L115] COND FALSE !(t2_pc == 0) [L118] COND TRUE t2_pc == 1 [L134] CALL error() [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 24 procedures, 269 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.7s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 17.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1290 SDtfs, 6602 SDslu, 314 SDs, 0 SdLazy, 5707 SolverSat, 2036 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1861occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 2673 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...