/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:05:55,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:05:55,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:05:55,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:05:55,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:05:55,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:05:55,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:05:55,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:05:55,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:05:55,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:05:55,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:05:55,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:05:55,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:05:55,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:05:55,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:05:55,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:05:55,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:05:55,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:05:55,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:05:55,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:05:55,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:05:55,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:05:55,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:05:55,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:05:55,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:05:55,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:05:55,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:05:55,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:05:55,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:05:55,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:05:55,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:05:55,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:05:55,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:05:55,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:05:55,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:05:55,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:05:55,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:05:55,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:05:55,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:05:55,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:05:55,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:05:55,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:05:55,740 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:05:55,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:05:55,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:05:55,743 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:05:55,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:05:55,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:05:55,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:05:55,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:05:55,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:05:55,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:05:55,744 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:05:55,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:05:55,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:05:55,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:05:55,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:05:55,746 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:05:55,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:05:55,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:05:55,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:05:55,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:05:55,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:05:55,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:05:55,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:05:56,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:05:56,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:05:56,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:05:56,230 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:05:56,231 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:05:56,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2021-02-23 18:05:56,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eeaf9f30/88e069368b354d8dacc96a896304a9c8/FLAG81c30b5dd [2021-02-23 18:05:57,261 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:05:57,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2021-02-23 18:05:57,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eeaf9f30/88e069368b354d8dacc96a896304a9c8/FLAG81c30b5dd [2021-02-23 18:05:57,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eeaf9f30/88e069368b354d8dacc96a896304a9c8 [2021-02-23 18:05:57,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:05:57,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:05:57,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:05:57,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:05:57,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:05:57,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:05:57" (1/1) ... [2021-02-23 18:05:57,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f79b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:57, skipping insertion in model container [2021-02-23 18:05:57,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:05:57" (1/1) ... [2021-02-23 18:05:57,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:05:57,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:05:57,971 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i[296,309] [2021-02-23 18:05:58,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:05:58,174 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:05:58,190 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i[296,309] [2021-02-23 18:05:58,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:05:58,291 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:05:58,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:58 WrapperNode [2021-02-23 18:05:58,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:05:58,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:05:58,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:05:58,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:05:58,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:58" (1/1) ... [2021-02-23 18:05:58,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:58" (1/1) ... [2021-02-23 18:05:58,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:58" (1/1) ... [2021-02-23 18:05:58,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:58" (1/1) ... [2021-02-23 18:05:58,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:58" (1/1) ... [2021-02-23 18:05:58,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:58" (1/1) ... [2021-02-23 18:05:58,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:58" (1/1) ... [2021-02-23 18:05:58,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:05:58,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:05:58,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:05:58,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:05:58,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:58" (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 [2021-02-23 18:05:58,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:05:58,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:05:58,554 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:05:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-23 18:05:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 18:05:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 18:05:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 18:05:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 18:05:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 18:05:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2021-02-23 18:05:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2021-02-23 18:05:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-02-23 18:05:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-02-23 18:05:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:05:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:05:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:05:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:05:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:05:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-23 18:05:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:05:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:05:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:05:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:05:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:05:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:05:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:05:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:05:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:05:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:05:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:05:58,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:05:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:05:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:05:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:05:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:05:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 18:05:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 18:05:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 18:05:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 18:05:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 18:05:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:05:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:05:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:05:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:05:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:05:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:05:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:05:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:05:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:05:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:05:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:05:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:05:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:05:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:05:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:05:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:05:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:05:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:05:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:05:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:05:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:05:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:05:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:05:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:05:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:05:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:05:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:05:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:05:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:05:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:05:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:05:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:05:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:05:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:05:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:05:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:05:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:05:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:05:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:05:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:05:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:05:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:05:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:05:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:05:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:05:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:05:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:05:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:05:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:05:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:05:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:05:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:05:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:05:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:05:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:05:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:05:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:05:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:05:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:05:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:05:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:05:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:05:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:05:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:05:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:05:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:05:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:05:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:05:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:05:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:05:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:05:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:05:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:05:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:05:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:05:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:05:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:05:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:05:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:05:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:05:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:05:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:05:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:05:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:05:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:05:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:05:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2021-02-23 18:05:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2021-02-23 18:05:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-02-23 18:05:58,575 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-02-23 18:05:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:05:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:05:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:05:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-23 18:05:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:05:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:05:58,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:05:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:05:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:05:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:05:59,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:05:59,303 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 18:05:59,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:05:59 BoogieIcfgContainer [2021-02-23 18:05:59,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:05:59,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:05:59,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:05:59,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:05:59,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:05:57" (1/3) ... [2021-02-23 18:05:59,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1204d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:05:59, skipping insertion in model container [2021-02-23 18:05:59,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:05:58" (2/3) ... [2021-02-23 18:05:59,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1204d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:05:59, skipping insertion in model container [2021-02-23 18:05:59,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:05:59" (3/3) ... [2021-02-23 18:05:59,317 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2021-02-23 18:05:59,327 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:05:59,334 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:05:59,380 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:05:59,414 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:05:59,414 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:05:59,414 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:05:59,415 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:05:59,415 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:05:59,415 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:05:59,415 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:05:59,415 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:05:59,437 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-23 18:05:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 18:05:59,448 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:59,449 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] [2021-02-23 18:05:59,450 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:59,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1068471701, now seen corresponding path program 1 times [2021-02-23 18:05:59,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:59,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986634397] [2021-02-23 18:05:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:59,587 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:59,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:59,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:59,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:59,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:59,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:59,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:59,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:59,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:59,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:59,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:05:59,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:59,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:59,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:59,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:59,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:05:59,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986634397] [2021-02-23 18:05:59,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:59,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:05:59,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174142850] [2021-02-23 18:05:59,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:05:59,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:59,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:05:59,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:05:59,957 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 7 states. [2021-02-23 18:06:00,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:06:00,660 INFO L93 Difference]: Finished difference Result 134 states and 163 transitions. [2021-02-23 18:06:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 18:06:00,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-23 18:06:00,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:06:00,677 INFO L225 Difference]: With dead ends: 134 [2021-02-23 18:06:00,677 INFO L226 Difference]: Without dead ends: 72 [2021-02-23 18:06:00,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-02-23 18:06:00,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-23 18:06:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-02-23 18:06:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-23 18:06:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2021-02-23 18:06:00,755 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 26 [2021-02-23 18:06:00,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:06:00,756 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2021-02-23 18:06:00,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:06:00,757 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2021-02-23 18:06:00,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-23 18:06:00,761 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:06:00,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:06:00,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:06:00,762 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:06:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:06:00,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1890572304, now seen corresponding path program 1 times [2021-02-23 18:06:00,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:06:00,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863058758] [2021-02-23 18:06:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:06:00,771 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:06:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:00,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:00,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:00,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:00,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:00,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:00,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:00,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:00,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:00,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:06:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:00,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:00,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:00,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 18:06:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:01,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:06:01,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:06:01,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:01,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:06:01,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:06:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:01,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:01,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 18:06:01,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863058758] [2021-02-23 18:06:01,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:06:01,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:06:01,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514502198] [2021-02-23 18:06:01,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:06:01,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:06:01,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:06:01,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:06:01,181 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 9 states. [2021-02-23 18:06:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:06:01,554 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-02-23 18:06:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 18:06:01,555 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-23 18:06:01,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:06:01,558 INFO L225 Difference]: With dead ends: 107 [2021-02-23 18:06:01,558 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 18:06:01,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-23 18:06:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 18:06:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2021-02-23 18:06:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 18:06:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-02-23 18:06:01,586 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 66 [2021-02-23 18:06:01,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:06:01,587 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-02-23 18:06:01,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:06:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-02-23 18:06:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-23 18:06:01,590 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:06:01,590 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 18:06:01,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:06:01,591 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:06:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:06:01,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1258103149, now seen corresponding path program 1 times [2021-02-23 18:06:01,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:06:01,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863794820] [2021-02-23 18:06:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:06:01,598 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:06:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:01,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:01,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:01,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:06:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:01,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 18:06:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:01,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:01,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:06:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:01,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:06:01,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:06:01,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:01,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:01,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:01,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:06:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-23 18:06:01,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863794820] [2021-02-23 18:06:01,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:06:01,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:06:01,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101274665] [2021-02-23 18:06:01,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:06:01,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:06:01,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:06:01,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:06:01,933 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2021-02-23 18:06:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:06:02,243 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2021-02-23 18:06:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 18:06:02,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-23 18:06:02,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:06:02,246 INFO L225 Difference]: With dead ends: 104 [2021-02-23 18:06:02,246 INFO L226 Difference]: Without dead ends: 70 [2021-02-23 18:06:02,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-23 18:06:02,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-23 18:06:02,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2021-02-23 18:06:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-23 18:06:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2021-02-23 18:06:02,266 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 66 [2021-02-23 18:06:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:06:02,267 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2021-02-23 18:06:02,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:06:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2021-02-23 18:06:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-23 18:06:02,269 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:06:02,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:06:02,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:06:02,269 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:06:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:06:02,270 INFO L82 PathProgramCache]: Analyzing trace with hash 795212650, now seen corresponding path program 1 times [2021-02-23 18:06:02,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:06:02,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505762936] [2021-02-23 18:06:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:06:02,276 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:06:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:02,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:02,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:02,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:02,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:02,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:02,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:02,438 WARN L141 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-02-23 18:06:02,441 WARN L147 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size 8 [2021-02-23 18:06:02,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:02,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:06:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:02,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:02,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:02,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:02,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 18:06:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:02,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:02,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:02,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:02,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:02,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:02,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:02,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:06:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:02,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:02,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:02,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:02,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:02,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:02,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:02,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:02,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:02,701 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 18:06:02,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505762936] [2021-02-23 18:06:02,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:06:02,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-23 18:06:02,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128148] [2021-02-23 18:06:02,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 18:06:02,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:06:02,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 18:06:02,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-02-23 18:06:02,704 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 17 states. [2021-02-23 18:06:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:06:04,106 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2021-02-23 18:06:04,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 18:06:04,107 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2021-02-23 18:06:04,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:06:04,110 INFO L225 Difference]: With dead ends: 113 [2021-02-23 18:06:04,110 INFO L226 Difference]: Without dead ends: 110 [2021-02-23 18:06:04,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 18:06:04,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-23 18:06:04,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2021-02-23 18:06:04,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-02-23 18:06:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-02-23 18:06:04,146 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 66 [2021-02-23 18:06:04,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:06:04,147 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-02-23 18:06:04,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 18:06:04,147 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-02-23 18:06:04,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-23 18:06:04,149 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:06:04,149 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 18:06:04,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:06:04,150 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:06:04,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:06:04,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1437147983, now seen corresponding path program 1 times [2021-02-23 18:06:04,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:06:04,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821588563] [2021-02-23 18:06:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:06:04,157 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:06:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:04,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:04,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:04,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:04,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:04,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:04,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:04,278 WARN L141 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-02-23 18:06:04,279 WARN L147 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size 12 [2021-02-23 18:06:04,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:06:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:04,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:04,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:04,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:04,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 18:06:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:04,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:04,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:04,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:04,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:04,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:04,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:04,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:04,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:04,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:06:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:04,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:04,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:04,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:04,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 18:06:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:04,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:04,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 18:06:04,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821588563] [2021-02-23 18:06:04,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:06:04,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 18:06:04,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058074481] [2021-02-23 18:06:04,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 18:06:04,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:06:04,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 18:06:04,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-02-23 18:06:04,610 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 18 states. [2021-02-23 18:06:05,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:06:05,714 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2021-02-23 18:06:05,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 18:06:05,715 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 75 [2021-02-23 18:06:05,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:06:05,718 INFO L225 Difference]: With dead ends: 118 [2021-02-23 18:06:05,718 INFO L226 Difference]: Without dead ends: 109 [2021-02-23 18:06:05,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2021-02-23 18:06:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-23 18:06:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2021-02-23 18:06:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-02-23 18:06:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2021-02-23 18:06:05,779 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 75 [2021-02-23 18:06:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:06:05,779 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2021-02-23 18:06:05,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 18:06:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2021-02-23 18:06:05,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-02-23 18:06:05,784 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:06:05,784 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 18:06:05,784 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:06:05,784 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:06:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:06:05,785 INFO L82 PathProgramCache]: Analyzing trace with hash -2120960867, now seen corresponding path program 1 times [2021-02-23 18:06:05,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:06:05,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939309451] [2021-02-23 18:06:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:06:05,798 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:06:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:05,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:05,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:05,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:05,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:05,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:05,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:05,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:05,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:05,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:05,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:05,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:05,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:05,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:05,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:05,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:05,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:06:05,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:05,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:06:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:05,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:05,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:06,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 18:06:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:06,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:06,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:06,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:06,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:06,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:06,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:06,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:06:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:06,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:06,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:06,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:06,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:06,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:06,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:06,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 18:06:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:06,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:06,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:06,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 18:06:06,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939309451] [2021-02-23 18:06:06,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:06:06,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-23 18:06:06,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772483828] [2021-02-23 18:06:06,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-23 18:06:06,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:06:06,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-23 18:06:06,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2021-02-23 18:06:06,318 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand 23 states. [2021-02-23 18:06:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:06:07,992 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2021-02-23 18:06:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 18:06:07,993 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2021-02-23 18:06:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:06:07,995 INFO L225 Difference]: With dead ends: 117 [2021-02-23 18:06:07,996 INFO L226 Difference]: Without dead ends: 110 [2021-02-23 18:06:07,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2021-02-23 18:06:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-02-23 18:06:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-02-23 18:06:08,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-02-23 18:06:08,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-02-23 18:06:08,035 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 76 [2021-02-23 18:06:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:06:08,036 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-02-23 18:06:08,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-23 18:06:08,036 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-02-23 18:06:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-23 18:06:08,038 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:06:08,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:06:08,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:06:08,039 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:06:08,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:06:08,040 INFO L82 PathProgramCache]: Analyzing trace with hash 16866635, now seen corresponding path program 1 times [2021-02-23 18:06:08,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:06:08,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310081249] [2021-02-23 18:06:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:06:08,045 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:06:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:08,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:08,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:08,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:08,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:06:08,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:06:08,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:06:08,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:06:08,186 WARN L141 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-02-23 18:06:08,187 WARN L147 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size 21 [2021-02-23 18:06:08,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:08,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:06:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:08,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:08,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 18:06:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:08,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:06:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:08,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:06:08,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:06:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:08,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:06:08,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:06:08,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:08,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:06:08,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:06:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 18:06:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:08,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-23 18:06:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:08,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:08,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-23 18:06:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:08,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:06:08,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:08,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:06:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 18:06:08,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310081249] [2021-02-23 18:06:08,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:06:08,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-23 18:06:08,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270378571] [2021-02-23 18:06:08,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 18:06:08,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:06:08,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 18:06:08,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2021-02-23 18:06:08,645 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 24 states. [2021-02-23 18:06:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:06:10,827 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-02-23 18:06:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-23 18:06:10,828 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2021-02-23 18:06:10,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:06:10,831 INFO L225 Difference]: With dead ends: 140 [2021-02-23 18:06:10,831 INFO L226 Difference]: Without dead ends: 124 [2021-02-23 18:06:10,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=319, Invalid=2543, Unknown=0, NotChecked=0, Total=2862 [2021-02-23 18:06:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-23 18:06:10,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-02-23 18:06:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-02-23 18:06:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 133 transitions. [2021-02-23 18:06:10,876 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 133 transitions. Word has length 90 [2021-02-23 18:06:10,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:06:10,877 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 133 transitions. [2021-02-23 18:06:10,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 18:06:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 133 transitions. [2021-02-23 18:06:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-23 18:06:10,879 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:06:10,879 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:06:10,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:06:10,880 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:06:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:06:10,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1329248837, now seen corresponding path program 2 times [2021-02-23 18:06:10,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:06:10,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018171680] [2021-02-23 18:06:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:06:10,886 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:06:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:10,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:10,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:10,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:10,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:10,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:10,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:10,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:10,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:10,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:10,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:10,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:10,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:10,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:10,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:10,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:10,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:10,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:10,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:06:10,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:10,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:11,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:06:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:11,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:11,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 18:06:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:11,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:11,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:11,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:11,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:11,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:11,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:06:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:11,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:11,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:11,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:11,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:11,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:11,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:11,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:11,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:11,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 18:06:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:11,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:11,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-02-23 18:06:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:11,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:11,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:11,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-23 18:06:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:11,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:11,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:06:11,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018171680] [2021-02-23 18:06:11,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:06:11,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-23 18:06:11,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048965176] [2021-02-23 18:06:11,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 18:06:11,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:06:11,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 18:06:11,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2021-02-23 18:06:11,357 INFO L87 Difference]: Start difference. First operand 124 states and 133 transitions. Second operand 24 states. [2021-02-23 18:06:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:06:12,882 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2021-02-23 18:06:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 18:06:12,882 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2021-02-23 18:06:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:06:12,885 INFO L225 Difference]: With dead ends: 139 [2021-02-23 18:06:12,885 INFO L226 Difference]: Without dead ends: 134 [2021-02-23 18:06:12,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=1748, Unknown=0, NotChecked=0, Total=1980 [2021-02-23 18:06:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-23 18:06:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2021-02-23 18:06:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-23 18:06:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2021-02-23 18:06:12,920 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 90 [2021-02-23 18:06:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:06:12,920 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2021-02-23 18:06:12,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 18:06:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2021-02-23 18:06:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-23 18:06:12,923 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:06:12,923 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:06:12,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:06:12,923 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:06:12,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:06:12,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1789333268, now seen corresponding path program 1 times [2021-02-23 18:06:12,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:06:12,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871572876] [2021-02-23 18:06:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:06:12,929 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:06:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:12,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:12,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:12,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:12,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:12,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:12,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:12,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:12,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:12,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:12,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:12,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:13,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:06:13,025 WARN L141 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size [2021-02-23 18:06:13,027 WARN L147 QuantifierPusher]: treesize reduction 13, result has 38.1 percent of original size 8 [2021-02-23 18:06:13,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:06:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:13,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:13,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:13,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 18:06:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:13,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:13,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:13,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:13,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:13,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:13,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-02-23 18:06:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:13,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:13,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:13,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 18:06:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:13,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:13,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:13,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:13,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:06:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 18:06:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:13,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-02-23 18:06:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:13,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:13,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-23 18:06:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:06:13,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:06:13,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:06:13,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:06:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:06:13,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871572876] [2021-02-23 18:06:13,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:06:13,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 18:06:13,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490269223] [2021-02-23 18:06:13,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 18:06:13,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:06:13,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 18:06:13,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:06:13,349 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand 19 states. [2021-02-23 18:06:14,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:06:14,758 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-02-23 18:06:14,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 18:06:14,759 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 91 [2021-02-23 18:06:14,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:06:14,761 INFO L225 Difference]: With dead ends: 160 [2021-02-23 18:06:14,761 INFO L226 Difference]: Without dead ends: 147 [2021-02-23 18:06:14,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 18:06:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-02-23 18:06:14,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 132. [2021-02-23 18:06:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-02-23 18:06:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2021-02-23 18:06:14,796 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 91 [2021-02-23 18:06:14,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:06:14,797 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 140 transitions. [2021-02-23 18:06:14,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 18:06:14,797 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2021-02-23 18:06:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-02-23 18:06:14,798 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:06:14,799 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-02-23 18:06:14,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 18:06:14,799 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:06:14,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:06:14,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2000657900, now seen corresponding path program 1 times [2021-02-23 18:06:14,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:06:14,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709233151] [2021-02-23 18:06:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:06:14,804 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:06:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:06:14,828 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:06:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:06:14,853 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:06:14,916 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:06:14,916 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:06:14,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 18:06:14,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:06:14 BoogieIcfgContainer [2021-02-23 18:06:14,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:06:14,945 INFO L168 Benchmark]: Toolchain (without parser) took 17367.19 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 127.2 MB in the beginning and 114.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 177.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:06:14,946 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:06:14,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 104.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:06:14,946 INFO L168 Benchmark]: Boogie Preprocessor took 122.17 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 132.9 MB in the end (delta: -28.9 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:06:14,947 INFO L168 Benchmark]: RCFGBuilder took 881.13 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 88.2 MB in the end (delta: 44.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:06:14,947 INFO L168 Benchmark]: TraceAbstraction took 15636.71 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 87.8 MB in the beginning and 114.3 MB in the end (delta: -26.5 MB). Peak memory consumption was 137.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:06:14,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 694.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 104.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 122.17 ms. Allocated memory is still 151.0 MB. Free memory was 103.9 MB in the beginning and 132.9 MB in the end (delta: -28.9 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 881.13 ms. Allocated memory is still 151.0 MB. Free memory was 132.9 MB in the beginning and 88.2 MB in the end (delta: 44.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15636.71 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 87.8 MB in the beginning and 114.3 MB in the end (delta: -26.5 MB). Peak memory consumption was 137.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L519] void * guard_malloc_counter = 0; [L534] struct list_head *elem = ((void *)0); [L544] static struct list_head head; [L546] struct list_head *dev1, *dev2; [L547] CALL, EXPR my_malloc(sizeof(*dev1)) [L529] CALL, EXPR __getMemory(size) [L522] (size > 0) ? (0) : __blast_assert () [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; [L529] RET, EXPR __getMemory(size) [L529] return __getMemory(size); [L547] RET, EXPR my_malloc(sizeof(*dev1)) [L547] dev1 = my_malloc(sizeof(*dev1)) [L548] CALL, EXPR my_malloc(sizeof(*dev2)) [L529] CALL, EXPR __getMemory(size) [L522] (size > 0) ? (0) : __blast_assert () [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; [L529] RET, EXPR __getMemory(size) [L529] return __getMemory(size); [L548] RET, EXPR my_malloc(sizeof(*dev2)) [L548] dev2 = my_malloc(sizeof(*dev2)) [L549] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L550] CALL list_add(dev2, &head) [L536] (new!=elem) ? (0) : __blast_assert () [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] RET list_add(dev2, &head) [L551] CALL list_add(dev1, &head) [L536] (new!=elem) ? (0) : __blast_assert () [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new [L551] RET list_add(dev1, &head) [L552] CALL list_del(dev2) [L541] COND FALSE !(entry==elem) [L552] RET list_del(dev2) [L553] CALL list_add(dev2, &head) [L536] (new!=elem) ? (0) : __blast_assert () [L537] COND FALSE !(__VERIFIER_nondet_int()) [L553] RET list_add(dev2, &head) [L554] CALL list_add(dev1, &head) [L536] (new!=elem) ? (0) : __blast_assert () [L536] CALL __blast_assert () [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.5s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 573 SDtfs, 1038 SDslu, 2486 SDs, 0 SdLazy, 6499 SolverSat, 517 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 57 StatesRemovedByMinimization, 8 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...