/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:54:30,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:54:30,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:54:31,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:54:31,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:54:31,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:54:31,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:54:31,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:54:31,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:54:31,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:54:31,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:54:31,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:54:31,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:54:31,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:54:31,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:54:31,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:54:31,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:54:31,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:54:31,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:54:31,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:54:31,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:54:31,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:54:31,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:54:31,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:54:31,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:54:31,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:54:31,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:54:31,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:54:31,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:54:31,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:54:31,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:54:31,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:54:31,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:54:31,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:54:31,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:54:31,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:54:31,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:54:31,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:54:31,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:54:31,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:54:31,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:54:31,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:54:31,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:54:31,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:54:31,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:54:31,153 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:54:31,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:54:31,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:54:31,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:54:31,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:54:31,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:54:31,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:54:31,154 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:54:31,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:54:31,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:54:31,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:54:31,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:54:31,155 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:54:31,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:54:31,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:54:31,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:54:31,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:54:31,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:54:31,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:54:31,157 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:54:31,158 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:54:31,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:54:31,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:54:31,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:54:31,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:54:31,611 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:54:31,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2021-02-22 01:54:31,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e13609d/6586a4c0a7ae42268251c2e2355ea7e6/FLAGe97af0db4 [2021-02-22 01:54:32,323 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:54:32,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2021-02-22 01:54:32,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e13609d/6586a4c0a7ae42268251c2e2355ea7e6/FLAGe97af0db4 [2021-02-22 01:54:32,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e13609d/6586a4c0a7ae42268251c2e2355ea7e6 [2021-02-22 01:54:32,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:54:32,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:54:32,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:54:32,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:54:32,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:54:32,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:54:32" (1/1) ... [2021-02-22 01:54:32,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e34285b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:32, skipping insertion in model container [2021-02-22 01:54:32,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:54:32" (1/1) ... [2021-02-22 01:54:32,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:54:32,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:54:33,103 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2021-02-22 01:54:33,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:54:33,186 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:54:33,260 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2021-02-22 01:54:33,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:54:33,384 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:54:33,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:33 WrapperNode [2021-02-22 01:54:33,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:54:33,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:54:33,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:54:33,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:54:33,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:33" (1/1) ... [2021-02-22 01:54:33,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:33" (1/1) ... [2021-02-22 01:54:33,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:33" (1/1) ... [2021-02-22 01:54:33,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:33" (1/1) ... [2021-02-22 01:54:33,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:33" (1/1) ... [2021-02-22 01:54:33,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:33" (1/1) ... [2021-02-22 01:54:33,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:33" (1/1) ... [2021-02-22 01:54:33,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:54:33,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:54:33,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:54:33,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:54:33,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:54:33,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:54:33,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:54:33,635 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:54:33,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-22 01:54:33,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-22 01:54:33,635 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-02-22 01:54:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-02-22 01:54:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2021-02-22 01:54:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2021-02-22 01:54:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2021-02-22 01:54:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2021-02-22 01:54:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2021-02-22 01:54:33,636 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2021-02-22 01:54:33,637 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2021-02-22 01:54:33,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 01:54:33,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 01:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-22 01:54:33,638 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-22 01:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 01:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 01:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 01:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 01:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 01:54:33,639 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 01:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 01:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 01:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 01:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 01:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 01:54:33,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 01:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 01:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 01:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 01:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 01:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 01:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 01:54:33,641 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 01:54:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 01:54:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 01:54:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 01:54:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 01:54:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 01:54:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 01:54:33,642 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 01:54:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 01:54:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 01:54:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 01:54:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 01:54:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 01:54:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 01:54:33,643 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 01:54:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 01:54:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 01:54:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 01:54:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 01:54:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 01:54:33,644 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 01:54:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 01:54:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 01:54:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 01:54:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 01:54:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 01:54:33,645 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 01:54:33,646 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 01:54:33,646 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 01:54:33,646 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 01:54:33,646 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 01:54:33,646 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 01:54:33,647 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:54:33,647 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 01:54:33,647 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 01:54:33,647 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:54:33,647 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-22 01:54:33,647 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 01:54:33,647 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 01:54:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 01:54:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 01:54:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 01:54:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 01:54:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 01:54:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 01:54:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 01:54:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 01:54:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 01:54:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 01:54:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 01:54:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 01:54:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 01:54:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 01:54:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 01:54:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 01:54:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 01:54:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 01:54:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 01:54:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 01:54:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 01:54:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 01:54:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 01:54:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 01:54:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 01:54:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 01:54:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 01:54:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 01:54:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 01:54:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 01:54:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 01:54:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 01:54:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 01:54:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 01:54:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 01:54:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 01:54:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 01:54:33,652 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 01:54:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 01:54:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 01:54:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 01:54:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 01:54:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:54:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-02-22 01:54:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-02-22 01:54:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:54:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:54:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2021-02-22 01:54:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:54:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2021-02-22 01:54:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-22 01:54:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:54:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2021-02-22 01:54:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2021-02-22 01:54:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2021-02-22 01:54:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2021-02-22 01:54:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2021-02-22 01:54:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:54:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:54:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:54:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:54:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:54:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:54:34,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:54:34,537 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2021-02-22 01:54:34,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:54:34 BoogieIcfgContainer [2021-02-22 01:54:34,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:54:34,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:54:34,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:54:34,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:54:34,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:54:32" (1/3) ... [2021-02-22 01:54:34,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6955f800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:54:34, skipping insertion in model container [2021-02-22 01:54:34,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:33" (2/3) ... [2021-02-22 01:54:34,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6955f800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:54:34, skipping insertion in model container [2021-02-22 01:54:34,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:54:34" (3/3) ... [2021-02-22 01:54:34,551 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2021-02-22 01:54:34,559 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:54:34,564 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:54:34,584 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:54:34,612 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:54:34,613 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:54:34,613 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:54:34,613 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:54:34,613 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:54:34,614 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:54:34,614 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:54:34,614 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:54:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states. [2021-02-22 01:54:34,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-22 01:54:34,651 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:54:34,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:54:34,653 INFO L428 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:54:34,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:54:34,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1428598154, now seen corresponding path program 1 times [2021-02-22 01:54:34,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:54:34,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511946693] [2021-02-22 01:54:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:54:34,775 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:54:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:34,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:34,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:34,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:34,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:34,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:54:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:34,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:34,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:34,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:54:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:34,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:34,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:34,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:34,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:54:35,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511946693] [2021-02-22 01:54:35,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:54:35,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:54:35,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218566953] [2021-02-22 01:54:35,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:54:35,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:54:35,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:54:35,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:54:35,031 INFO L87 Difference]: Start difference. First operand 213 states. Second operand 4 states. [2021-02-22 01:54:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:54:35,606 INFO L93 Difference]: Finished difference Result 428 states and 577 transitions. [2021-02-22 01:54:35,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:54:35,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-02-22 01:54:35,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:54:35,623 INFO L225 Difference]: With dead ends: 428 [2021-02-22 01:54:35,623 INFO L226 Difference]: Without dead ends: 215 [2021-02-22 01:54:35,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:54:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-02-22 01:54:35,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 192. [2021-02-22 01:54:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-02-22 01:54:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 212 transitions. [2021-02-22 01:54:35,711 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 212 transitions. Word has length 45 [2021-02-22 01:54:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:54:35,712 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 212 transitions. [2021-02-22 01:54:35,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:54:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 212 transitions. [2021-02-22 01:54:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-22 01:54:35,716 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:54:35,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:54:35,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:54:35,717 INFO L428 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:54:35,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:54:35,718 INFO L82 PathProgramCache]: Analyzing trace with hash -505106365, now seen corresponding path program 1 times [2021-02-22 01:54:35,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:54:35,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967509933] [2021-02-22 01:54:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:54:35,725 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:54:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:36,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:36,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:54:36,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 01:54:36,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 01:54:36,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:36,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:36,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:36,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:36,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:54:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:36,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:54:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:36,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 01:54:36,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:54:36,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 01:54:36,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 01:54:36,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 01:54:36,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-22 01:54:36,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 01:54:36,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 01:54:36,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 01:54:36,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 01:54:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:54:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:36,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:54:36,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:54:36,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:54:36,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 01:54:36,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:54:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:36,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:36,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:36,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:36,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:36,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-22 01:54:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:37,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:37,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:54:37,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:37,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-02-22 01:54:37,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:37,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-02-22 01:54:37,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:37,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-02-22 01:54:37,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:37,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 950 [2021-02-22 01:54:37,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:37,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 950 [2021-02-22 01:54:37,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:54:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:37,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:37,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:54:37,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:37,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 01:54:37,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:37,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 01:54:38,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:38,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 01:54:38,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:38,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-02-22 01:54:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-22 01:54:38,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967509933] [2021-02-22 01:54:38,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:54:38,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-02-22 01:54:38,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153821096] [2021-02-22 01:54:38,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-02-22 01:54:38,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:54:38,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-02-22 01:54:38,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1101, Unknown=0, NotChecked=0, Total=1190 [2021-02-22 01:54:38,373 INFO L87 Difference]: Start difference. First operand 192 states and 212 transitions. Second operand 35 states. [2021-02-22 01:54:39,061 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-02-22 01:54:39,484 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-02-22 01:54:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:54:44,908 INFO L93 Difference]: Finished difference Result 267 states and 302 transitions. [2021-02-22 01:54:44,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-22 01:54:44,909 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 89 [2021-02-22 01:54:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:54:44,913 INFO L225 Difference]: With dead ends: 267 [2021-02-22 01:54:44,913 INFO L226 Difference]: Without dead ends: 264 [2021-02-22 01:54:44,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=258, Invalid=3048, Unknown=0, NotChecked=0, Total=3306 [2021-02-22 01:54:44,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-22 01:54:44,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 209. [2021-02-22 01:54:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-22 01:54:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 231 transitions. [2021-02-22 01:54:44,968 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 231 transitions. Word has length 89 [2021-02-22 01:54:44,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:54:44,969 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 231 transitions. [2021-02-22 01:54:44,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-02-22 01:54:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 231 transitions. [2021-02-22 01:54:44,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-22 01:54:44,971 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:54:44,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:54:44,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:54:44,972 INFO L428 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:54:44,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:54:44,972 INFO L82 PathProgramCache]: Analyzing trace with hash -75653267, now seen corresponding path program 1 times [2021-02-22 01:54:44,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:54:44,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058588525] [2021-02-22 01:54:44,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:54:44,981 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:54:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:45,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:45,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:54:45,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 01:54:45,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 01:54:45,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:45,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:45,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:45,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:45,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:54:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:45,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:45,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:54:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:45,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:54:45,302 WARN L141 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-02-22 01:54:45,303 WARN L147 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size 18 [2021-02-22 01:54:45,327 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-22 01:54:45,328 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-22 01:54:45,354 WARN L141 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size [2021-02-22 01:54:45,355 WARN L147 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size 37 [2021-02-22 01:54:45,408 WARN L141 QuantifierPusher]: treesize reduction 7, result has 82.5 percent of original size [2021-02-22 01:54:45,409 WARN L147 QuantifierPusher]: treesize reduction 7, result has 82.5 percent of original size 33 [2021-02-22 01:54:45,469 WARN L141 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size [2021-02-22 01:54:45,470 WARN L147 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size 27 [2021-02-22 01:54:45,509 WARN L141 QuantifierPusher]: treesize reduction 4, result has 88.6 percent of original size [2021-02-22 01:54:45,511 WARN L147 QuantifierPusher]: treesize reduction 4, result has 88.6 percent of original size 31 [2021-02-22 01:54:45,556 WARN L141 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size [2021-02-22 01:54:45,557 WARN L147 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size 23 [2021-02-22 01:54:45,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 01:54:45,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-22 01:54:45,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:54:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:45,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:54:45,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:54:45,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 01:54:45,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 01:54:45,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:54:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:45,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:45,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:45,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:45,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:54:45,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-22 01:54:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:46,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:46,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:54:46,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:46,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-22 01:54:46,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:46,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-22 01:54:46,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:46,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-02-22 01:54:46,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:46,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 914 [2021-02-22 01:54:46,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:46,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 914 [2021-02-22 01:54:46,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 01:54:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:46,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:46,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:54:47,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:47,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 01:54:47,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:47,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 01:54:47,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:47,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 01:54:47,223 WARN L141 QuantifierPusher]: treesize reduction 96, result has 65.8 percent of original size [2021-02-22 01:54:47,224 WARN L147 QuantifierPusher]: treesize reduction 96, result has 65.8 percent of original size 185 [2021-02-22 01:54:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-22 01:54:47,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058588525] [2021-02-22 01:54:47,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:54:47,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-02-22 01:54:47,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448831868] [2021-02-22 01:54:47,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-22 01:54:47,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:54:47,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-22 01:54:47,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2021-02-22 01:54:47,570 INFO L87 Difference]: Start difference. First operand 209 states and 231 transitions. Second operand 36 states. [2021-02-22 01:54:55,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:54:55,925 INFO L93 Difference]: Finished difference Result 277 states and 315 transitions. [2021-02-22 01:54:55,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-22 01:54:55,926 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 91 [2021-02-22 01:54:55,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:54:55,930 INFO L225 Difference]: With dead ends: 277 [2021-02-22 01:54:55,930 INFO L226 Difference]: Without dead ends: 274 [2021-02-22 01:54:55,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=299, Invalid=3733, Unknown=0, NotChecked=0, Total=4032 [2021-02-22 01:54:55,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-02-22 01:54:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 209. [2021-02-22 01:54:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-22 01:54:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 230 transitions. [2021-02-22 01:54:55,980 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 230 transitions. Word has length 91 [2021-02-22 01:54:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:54:55,981 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 230 transitions. [2021-02-22 01:54:55,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-02-22 01:54:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 230 transitions. [2021-02-22 01:54:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-02-22 01:54:55,983 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:54:55,983 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:54:55,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:54:55,983 INFO L428 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:54:55,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:54:55,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1638781318, now seen corresponding path program 1 times [2021-02-22 01:54:55,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:54:55,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949475628] [2021-02-22 01:54:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:54:55,989 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:54:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:54:56,037 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:54:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:54:56,082 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:54:56,132 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:54:56,132 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:54:56,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:54:56,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:54:56 BoogieIcfgContainer [2021-02-22 01:54:56,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:54:56,158 INFO L168 Benchmark]: Toolchain (without parser) took 23533.80 ms. Allocated memory was 159.4 MB in the beginning and 369.1 MB in the end (delta: 209.7 MB). Free memory was 114.1 MB in the beginning and 200.4 MB in the end (delta: -86.3 MB). Peak memory consumption was 124.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:56,158 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 159.4 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:54:56,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.71 ms. Allocated memory is still 159.4 MB. Free memory was 113.0 MB in the beginning and 141.9 MB in the end (delta: -28.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:56,160 INFO L168 Benchmark]: Boogie Preprocessor took 140.97 ms. Allocated memory is still 159.4 MB. Free memory was 141.9 MB in the beginning and 138.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:56,160 INFO L168 Benchmark]: RCFGBuilder took 1010.17 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 138.3 MB in the beginning and 149.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 53.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:56,161 INFO L168 Benchmark]: TraceAbstraction took 21614.07 ms. Allocated memory was 191.9 MB in the beginning and 369.1 MB in the end (delta: 177.2 MB). Free memory was 149.0 MB in the beginning and 200.4 MB in the end (delta: -51.4 MB). Peak memory consumption was 125.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:56,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 159.4 MB. Free memory is still 132.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 746.71 ms. Allocated memory is still 159.4 MB. Free memory was 113.0 MB in the beginning and 141.9 MB in the end (delta: -28.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 140.97 ms. Allocated memory is still 159.4 MB. Free memory was 141.9 MB in the beginning and 138.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1010.17 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 138.3 MB in the beginning and 149.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 53.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21614.07 ms. Allocated memory was 191.9 MB in the beginning and 369.1 MB in the end (delta: 177.2 MB). Free memory was 149.0 MB in the beginning and 200.4 MB in the end (delta: -51.4 MB). Peak memory consumption was 125.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L639] const struct node *p1, *p2; [L640] CALL, EXPR create_sll(&p1, &p2) [L588] struct node *list = ((void *)0); [L590] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L590] RET chain_node(&list) [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L597] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L597] RET chain_node(&list) [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; [L640] RET, EXPR create_sll(&p1, &p2) [L640] struct node *list = create_sll(&p1, &p2); [L642] EXPR \read(*p1) [L642] EXPR \read(*p2) [L642] CALL check_seq_next(p1, p2) [L626] COND FALSE !(!(beg)) [L627] COND FALSE !(!(end)) [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg [L629] COND TRUE !(beg) [L629] CALL fail() [L565] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 15.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 541 SDtfs, 979 SDslu, 3509 SDs, 0 SdLazy, 8860 SolverSat, 296 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=213occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 143 StatesRemovedByMinimization, 3 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...